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I mainly test phones between 200 and 300€ because they offer everything you would expect from a phone and that gives me something interesting to test.[b][b]I sometimes make exceptions by buying entry-level phones but so far I have been disappointed. For example, I had tested the Huawei Y6 which was sold for the price of a Redmi Note 8 but couldn't compete with the Xiaomi in any way.[b][b]I decided to test the entry level Xiaomi with this Redmi 9C and bought the Redmi 9A which you can find in another article. These two phones are sold for less than 100€ but they offer a price/performance ratio that you won't find in the competition.[b][b]I obviously expect the Redmi 9C to come in at the bottom of the performance rankings but I'm curious to see what it has in store and whether Xiaomi will once again have managed to conquer a price segment with the best offer.[b][b][b][b]
Structure of my tests
I test the phones according to a pre-established structure (see below) to provide you with as much information as possible. Unfortunately, this takes a long time. Some tests like network performance tests take several days and for photo tests I sometimes have to wait until the weather is suitable to take pictures in good conditions. I am therefore obliged to publish the tests step by step, so I invite you to come back if the test is not complete at the time of your visit.[b] How are my tests different from others on the web?
- I usually buy the devices with my own money, so price is just as important as you are! - I keep the devices for at least a few weeks (sometimes more) to see what they are worth in real conditions. - I answer (when possible) your questions to help you decide before you buy - no one pays me to do these reviews, so I'm completely neutral and independent... - My pages are not filled with ads
The list below shows the prices for the Redmi 9c from more than 50 sites around the world. If you are not satisfied with any price, you can subscribe to a price alert to be the first to be notified when the price drops.[b]bb
helpThe above links are affiliate links from companies such as Amazon, Gearbest, Aliexpress,... If you appreciate my work, I would be grateful if you could purchase these products through these links. It costs you absolutely nothing but I get a small commission that allows me to buy the material I test. Thank you very much!
Timeline
02/09/2020 purchase of the Redmi 9C for 94€ on Edwaybuy.[b]04/09/2020 I received the phone, so the test can start.[b][b]
Why this phone?
I hadn't yet bought an entry-level Redmi, I was convinced that there was no reason to test them. I changed my mind with the arrival of the Redmi 9C and Redmi 9A as these two phones are comparable to what the competition is doing but they cost much less. [b][b]For less than 100€ you can find mainly Chinese phones like Umidigi, Doogee or Cubot. If I add criteria to my selection such as a battery like the Redmi's, a large screen and reasonable performance...there's nothing left![b][b]
Unpacking
[b][b]The Redmi 9C is an entry-level phone, so I don't expect to be surprised by the contents of the box.[b][b]The box of the Redmi 9C looks like the boxes of the Redmi Note, the contents are about the same but there is no transparent shell. The usual USB chargers and cables are present.[b][b]
3add_a_photo
[b][b]
Length : 164.9 Width : 77.1 Thickness : 9 Weight : 196 Jack output : Yes USB Type : Micro USB Infrared port : No
First configuration
I couldn't take a screenshot during the start-up procedure of the Redmi 9C, I had the same problem with the Redmi 9A. I guess this is a common restriction for both phones.[b][b]The startup procedure has been standardised on most Xiaomi phones running MIUI 12. It doesn't present any difficulty, restoring the backup might be a bit slower because the phone is slower and it is not compatible with the 5Ghz frequency in wifi.[b][b]Xiaomi will try to seduce with its cloud at the end of the procedure, they added a shortcut to register with a Google account, so don't be fooled if you don't need the cloud.[b][b]
Finish
[b][b]This is the first time I have tested an entry-level Xiaomi phone. I had had the opportunity to test entry-level models from other brands and the finish was the first visible element of the phone's price positioning.[b][b]This Redmi 9C surprised me positively. Plastic is ubiquitous but the finishes are good for a phone in this price range.[b][b]
[b][b]The screen is quite large (6.53 inches) and takes up 81% of the available space. The borders are visible but no more than a mid-range phone. The front camera is housed in a notch, as was often the case a year or two ago.[b][b][b]
[b]The back of the phone uses a ribbed texture that makes the phone look less monotonous. There is also a fingerprint sensor and a photo module with 3 sensors. This module stands out a little but without interfering with the use of the phone.[b][b]The rest of the phone has a very classic configuration with the SIM drawer on the left (2 SIM slots + 1 memory card slot), the usual buttons are available on the right, they are clearly visible and well positioned. At the bottom there is a micro USB port, which is a pity because today all phones come out with a USB C port. The phone is also equipped with an audio jack output.[b][b]
14add_a_photo
[b][b]
Specifications
[b]The information below comes from the Device Info HW application. The application provides detailed technical information about the tested phone.I bought the Redmi 9c in a 2Gb / 32Gb version, there is also a 4Gb / 64Gb version.[b][b]Buyers of this phone will probably not buy it for its features. [b][b]Here is an overview of the features:[b]
[b][b]The Redmi 9c is equipped with a Helio G35 processor, this processor is also found in the Realme C11. It is an entry-level processor that is designed for general telephone use. [b][b]For the graphic part, the Redmi 9c is equipped with an IMG PowerVR GE8320 graphic chipset which will allow you to play 720p videos without any problems, this chipset is not designed for mobile PUBG games.[b][b]
Benchmark Antutu/3DMark
Testing a phone like the Redmi 9c with Antutu doesn't make much sense because this phone was not designed to break performance records.[b][b]I got a score of just over 110,000 points with Antutu, which should be enough for everyday use such as surfing the internet, watching some videos and playing some little games.[b][b]
Antutu score : 110214
[b]Top 10 - performance ranking based on Antutu 1. Poco F4 Gt - 853016 2. Realme Gt - 811858 3. Black Shark 4 Pro - 759986 4. Poco X4 Gt - 714577 5. Oppo Find X2 Pro - 605184 6. Oneplus 8t - 595000 7. Poco F3 - 589677 8. Xiaomi Mi 10t Pro - 581650 9. Oneplus 8 Pro - 579417 10. Xiaomi Mi 10 - 579114
Number of smartphones in the ranking:151 Position of this smartphone in the ranking:119/151
Note: this ranking only contains the phones I tested as well as a few others that I added for reference. [b]Gaming[b]To test the performance in game, I download the mobile PUBG game and evaluate the in-game experience, graphics level and depth of vision. This game is quite demanding and should help you evaluating the performance of a phone.[b][b]The Redmi 9C is not a phone designed for gaming, so I didn't expect to be able to play PUBG Mobile in good conditions and yet the result is not that bad. [b][b]The loading time of the game was very long, it took me several minutes to get into the game but once in the game, the gaming experience is not too bad. The level of graphics is at a minimum, the animations are not always fluid and sometimes the reaction time was not fast enough but overall the game was playable.[b][b]
Network performance
The Redmi 9C supports most European frequencies, so you should be able to use it everywhere.[b][b]
3G frequencies : B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B8 (900) 4G frequencies : B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B20 (800), B28 (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500) Bluetooth : Bluetooth 5.0 LE SAR / head : 0.355 SAR / body : 0.779 Volte : Yes NFC : No Number measurements : 1000 Average signal : -97.04 Download speed : 48 Upload speed : 20
Choose your country to check if your phone is compatible:
The frequencies displayed below will allow you to see if this phone is compatible with your operator or if you will be able to use it in the country where you are going on vacation.
Signal 4G (before december 2020)[b]The ability to pick up the network correctly is an essential element for a phone but it is only very rarely measured. To measure a phone's ability to pick up the network, I perform a large number of measurements on the same cells to be able to compare phones under similar conditions. The signal is measured in dBm, a value of -90dBm indicates a worse signal than -70dBm. These measurements are therefore taken under real conditions and not in a laboratory, they are not scientific but give a good indication of performance. [b][b]Network signal sensitivity rating
Phone tested:
Average signal (dBm)
Number of measurements:
Xiaomi Mi 9t Pro
-88
1600
Xiaomi Redmi Note 5
-91.305
600
Xiaomi Mi 9 Lite
-93
788
Samsung Galaxy A70
-94.511
1975
Nokia 5.3
-94.98
531
Realme 6
-95.14
2301
Xiaomi Redmi Note 8 Pro
-95.922
1599
Xiaomi Mi A3
-95.95
1000
Huawei Y6 2019
-95.95
1199
Doogee S58 Pro
-96.22
856
Redmi 9a
-96.48
1000
Meizu Note 9
-96.68
937
Motorola G8 Power
-96.88
1032
Xiaomi Redmi Note 7
-97.01
1430
Redmi 9c
-97.04
1000
Umidigi S3 Pro
-97.13
1200
Xiaomi Redmi Note 8
-97.34
879
Samsung Galaxy A21s
-97.78
1000
Umidigi F1
-97.82
298
Ulefone Armor 7e
-98.7
1000
Xiaomi Mi Note 10 Lite
-99
1000
Honor 9x
-99.14
899
Xiaomi Redmi Note 9s
-99.4
1860
Poco F2 Pro
-99.8
1247
Xiaomi Redmi Note 9
-100.79
1785
Xiaomi Mi 10 Lite 5g
-100.88
1198
Poco X3
-101.19
821
Umidigi F2
-101.47
712
[b]With exactly 1000 measurements, I obtained an average signal of -97.04 dB. It's been a long time since I've tested a Xiaomi that ranked above average.[b][b]The Redmi 9c scores well on the network level, it outperforms most of the other Xiaomi I tested this year. I also get a better score than the Samsung Galaxy A21s with which I have an average signal of -97.78.[b][b][b]Signal 4G (from December 2020)[b]I decided to change the methodology for measuring the network because I noticed that the configuration of the mobile network changes over time. This makes it more difficult to compare phones because the conditions are no longer exactly the same.[b][b]To overcome this problem, I set up a device that captures 24 hours a day about ten parameters from the mobile network (ex: cell id, rssi, rsrq, snr, frequency,...). I then place the phone next to the device for 24 to 48 hours taking the same measurements so that I can compare them. [b][b] Overview of the phones tested with this methodology[b][b]
Phone tested:
Measurements
Avg signal (reference)
Avg signal (phone)
Min/Max (reference)
Min/Max (phone)
Samsung Galaxy S10+
457
-93.06
-97.39
-89 / -98
-97 / -99
Xiaomi Mi 9t Pro
669
-93.69
-95.84
-90 / -95
-92 / -98
Poco F2 Pro
1438
-91.02
-94.99
-89 / -94
-94 / -96
Xiaomi Mi 10 Lite 5g
1645
-90.77
-95.02
- 88 / -98
-95 / -100
Poco X3
821
-94.89
-103.19
-91 / -97.7
-101 / -104
Umidigi Bison
2343
-92.71
-96.46
-90 / -99
-94 / -102
Oukitel C21
1101
-92.04
-94.99
-90 / -97
-92 / -95
Poco M3
1116
-92.09
-91.74
-88 / -98
-90 / -99
Xiaomi Mi 10t Pro
1071
-90.61
-94.03
-88 / -94
-94 / -96
Umidigi A9 Pro
981
-90.40
-94.01
-88 / -95
-93 / -95
Redmi Note 9t
1201
-92.149
-91.71
-90 / -97
-91 / -97
Xiaomi Redmi Note 10
999
-92.35
-93.99
-88 / -97
-92 / -98
Xiaomi Redmi Note 10 Pro
877
-89.72
-90.56
- 88 / -92
-89 / -95
Poco X3 Pro
1876
-91.45
-92.91
-90 / -94
-90 / -96
Poco F3
1382
-90.79
-94.2
-89 / -94
-93 / -98
Oneplus Nord N100
896
-91.23
-96.005
-88 / - 99
-96 / -99
Xiaomi Mi 11 Lite
2875
-91.36
-91.49
-87 / -96
-90 / -96
Samsung Galaxy A52
1427
-89.27
-93.39
-87 / -98
-92 / -96
Doogee S96 Pro
1259
-94.2
-91.21
-90 / -102
-88 / -95
Xiaomi Redmi Note 10s
957
-92.07
-97.62
-90 / -102
-96 / -102
Poco M3 Pro
1247
-91.76
-102.97
-99 / -104
-88 / -98
Realme Gt
843
-96.49
-94.02
-93 / -101
- 92 / -96
F150 R2022
1002
-92.4
-105.1
-90 / -97
-98 / -110
Umidigi Bison Pro
936
-94.2
-104.98
-91 / -98
-95 / -105
Redmi 10
2141
-94.74
-100.92
-92 / -98
-99 / -101
Tcl 10 Pro
871
-93.43
-94.001
-92 / -96
-93 / -95
Poco M4 Pro
570
-93.71
-96.78
-91 / -98
-95 / -99
Google Pixel 5
1444
-91.02
-97.02
-90 / -94
-97 / -101
Xiaomi 11t
1576
-92.305
-92.003
-90 / -96
-92 / -93
Redmi Note 11
1223
-92.5
-91.32
-92/-97
-90 / -93
Black Shark 4 Pro
2383
-95.178
-95.42
-90 / -100
-93 / -101
Redmi Note 11 Pro
349
-95.33
-93
-89 / -101
-92 / -94
Poco M4 Pro 4g
1202
-90.85
-88.95
-87 / - 95
-88 / -98
Tcl 30 Se
567
-92.11
-92.85
-88 / -98
-99 / -93
Poco X4 Pro
562
-92.06
-94.01
-90 / -95
-95 / -93
Redmi Note 11 Pro Plus 5g
945
-93.5
-93.54
-91 / -97
-92 / -97
Poco F4 Gt
832
-95.02
-93.09
-90 / -99
-93 / -97
Oukitel Wp18
1351
-95.94
-92.92
-91 / -97
-92 / -97
Poco X4 Gt
387
-96.99
-96.505
-96 / -98
-95 / -98
Poco F4
524
-95.78
-95.04
-93 / -99
-94/-96
Oneplus Nord 2t
1340
-98.83
-96.305
-95 / -102
-90 / -99
Redmi 10a
707
-89.026
-97.97
-87 / -91
-97 / -103
Poco M5
762
-95.18
-95.07
-98 / -93
-99 / -94
Unihertz Tank
1426
-91.21
-93.97
-90 / -95
-89 / -96
Poco X5 5g
2234
-92.3
-99.1
-91 / -95
- 100 / -98
Google Pixel 6a
853
-91.8
-95
-90 / -94
-95 / -97
[b][b][b][b]Download/Upload speed[b]To test the download speed, I have identified some 4G cells offering good performance where I test all my devices several times to see what download and upload speed they can achieve.[b]Top 10 - speed ranking in download 1. Samsung Galaxy S20 D:351Mbps U: 20Mbps 2. Poco X3 D:232Mbps U: 55Mbps 3. Xiaomi Mi 10 Lite 5g D:223Mbps U: 52Mbps 4. Poco F2 Pro D:207Mbps U: 53Mbps 5. Xiaomi Mi Note 10 Lite D:153Mbps U: 68Mbps 6. Xiaomi Mi A3 D:150Mbps U: 60Mbps 7. Xiaomi Redmi Note 9s D:150Mbps U: 60Mbps 8. Xiaomi Mi 8 Lite D:149Mbps U: 60Mbps 9. Samsung Galaxy A21s D:147Mbps U: 51Mbps 10. Huawei Y6 2019 D:145Mbps U: 61Mbps
Number of smartphones in the ranking:30 Position of this smartphone in the ranking:30/30
Note: the theoretical maximum speed of a telephone is often limited by the configuration of the mobile network and the congestion of the network at the time of the measurement. So maybe you could get a higher speed on another network [b]The Redmi 9C is not very fast in 4G but this should not stop you from using the phone. The speed in 4G allows you to surf the internet, watch videos on Youtube and use applications. You probably won't be able to use the phone as a modem because the speed will probably not be fast enough for comfort of use.[b][b][b]
Wifi performance
To test a phone's ability to receive the network properly, I take measurements near my router and then remotely (and always at the same place). This gives me an average in dBm where a value of -90 dBm indicates poorer performance than a value at -30 dBm.[b]
Wifi frequencies : 802.11b, 802.11g, 802.11n Download speed : 43 Signal / close : -19 Signal / distant : -62
Wifi signal[b]With an average signal of -19 dBm close to the router and -63 dBm remotely, the Redmi 9c offers a good sensitivity to the wifi signal (above average).[b][b][b]Top 10 - wifi sensitivity ranking 1. Poco F2 Pro -11dBm 2. Xiaomi Redmi Note 10 Pro -12dBm 3. Realme Gt -12dBm 4. Samsung Galaxy A21s -13dBm 5. Redmi Note 11 Pro -13dBm 6. Oneplus Nord N100 -15dBm 7. Poco X3 Pro -15dBm 8. Poco F3 -15dBm 9. Redmi Note 9t -15dBm 10. Black Shark 4 Pro -15dBm
Number of smartphones in the ranking:70 Position of this smartphone in the ranking:33/70
[b]Download/Upload speed[b]To test the speed in Wifi, I connect to my router in 2.4Ghz and 5Ghz (if available) and use the Ookla application to measure the speed.The Redmi 9C (as well as the Redmi 9A) are only compatible with wifi frequency (2.4Ghz) and unfortunately this affects the download performance. [b][b]I measured a little less than 50 Mbps for downloading, this is much less than phones running on 5Ghz but this speed should be enough to watch videos on Youtube.[b][b][b]Top 10 - wifi download speed ranking 1. Redmi Note 11 Pro Plus 5g 866Mbps 2. Poco F4 866Mbps 3. Poco F4 Gt 866Mbps 4. Poco X4 Gt 866Mbps 5. Oneplus Nord 2t 866Mbps 6. Black Shark 4 Pro 866Mbps 7. Google Pixel 6a 833Mbps 8. Poco M4 Pro 4g 433Mbps 9. Poco X5 5g 433Mbps 10. Poco M5 433Mbps
Number of smartphones in the ranking:68 Position of this smartphone in the ranking:66/68
Note: I have a 400Mbps line and a modem capable of delivering higher speed, but I can never be sure how much bandwidth is available when doing a test. [b]
GPS performance
[b]To test the quality of the GPS signal I use the Offline Maps application and I make the same train trip in pedestrian mode. Why? In pedestrian mode, the GPS does not artificially correct the signal to stick to the road, it has no markings, so you can see the actual position. I then use an application to measure the accuracy of the signal. [b][b]The Redmi 9C is equipped with a Mediatek processor which often results in better GPS accuracy. Once again, the Redmi 9C achieves an accuracy level of 2 metres.[b][b]However, the low power of the Redmi 9C will be a problem for fast travelers as the phone will have to refresh fast maps and latency may occur.[b][b]Top 10 - GPS accuracy ranking 1. Poco M5 1m 2. Poco X4 Gt 1m 3. Unihertz Tank 1m 4. Oukitel C21 1m 5. Redmi 9a 1m 6. Redmi 10a 1m 7. Doogee S96 Pro 1m 8. Xiaomi Redmi Note 10s 1m 9. Xiaomi Redmi Note 9 1m 10. Umidigi Bison Pro 1m
Number of smartphones in the ranking:41 Position of this smartphone in the ranking:16/41
Note: An accuracy of 3 meters or less can easily be corrected by a good GPS application. Phone performance also plays a role in how fast your display updates, so good accuracy could be compromised by too slow a display. [b]
Battery range
Capacity : 5000 Fast charge : Yes W max : 10 Range (100% brightness) : 656.00 Range (50% brightness) : 1915.00 Charging time : 170.00 Discharge speed (100%) : 0.15 Discharge score (100%) : 7.62 Discharge speed (50%) : 0.05 Discharge score (50%) : 2.61 Charging speed : 0.59 Charging score : 29.41
From March 2020, I replaced my subjective battery test with a technical test to better measure the real behaviour of the battery. Now I test the autonomy and charging time under absolutely identical conditions. I perform several measurements, so this test alone takes several days during which I cannot use the phone for anything else.
Battery life - methodology To test the battery life, I measure the battery consumption every minute in strictly identical conditions to be able to compare phones and also to allow you to evaluate your phone in the same conditions. I rule out any influence of applications that could interfere with the measurement. The autonomy is not linear, the battery sometimes discharges much faster at the end. This is a frustrating phenomenon but with my measurements, you will know if you need to find a charger quickly.
Battery life The battery of the Redmi 9c has a capacity of 5000 mAh and has discharged from 100% to 1% in 656.00 minutes with 100% brightness, it has discharged from 100% to 1% in 1915.00 minutes with 50% brightness. I obtain in this way an average discharge speed of 0.15% per minute with 100% luminosity and 0.05% per minute with 50% luminosity, the consumption is therefore 7.62 mA per minute with 100% luminosity and 2.61 with 50% luminosity. To be able to compare the efficiency of the phone and its influence on the battery, you have to compare the 7.62 (or 50%) score with that of other smartphones, the figure should be as low as possible.
Charging time - methodology To test the charging time, I always use the same charger with the same cable. I measure the charging time minute by minute to see the evolution of the charge as well as the charging speed. The charging speed of a battery is not linear, it is often faster at the beginning and slower at the end. The charger is compatible with fast charging.
Charging time The battery of the Redmi 9c has a capacity of 5000 mAh and has been charged from 1% to 100% in 170.00 minutes. This gives me an average charging speed of 0.59% per minute and therefore an increase of 29.41 mA per minute. To compare the performance of the Redmi 9c compared to other phones, you should use the 29.41 per minute score, this score should be as high as possible.
Important note: the charging speed is not always linear, the graph below gives you an indication of the battery behaviour.
The following table lists the phones tested with the technical battery test, they are ranked in order of efficiency. A higher battery capacity should logically result in a higher battery life but it is not always the case and it does not give any indication of the efficiency of a phone.
Smartphone
Capacity (mAh)
Battery life (minutes)
Efficiency Score
Battery life (minutes) / 50%
Efficiency Score / 50%
Charging time
.Score charging
Oukitel C21
4000
497.00
8.05
1324.00
3.02
167.00
23.95
Nokia 5.3
4000
549.00
7.29
1096.00
3.65
199.00
20.10
Samsung Galaxy S20
4000
565.00
7.08
1217.00
3.29
136.00
29.41
Honor 9x
4000
770.00
5.19
1333.00
3.00
151.00
26.49
Google Pixel 5
4080
773.00
5.28
1559.00
2.62
81.00
50.37
Umidigi A9 Pro
4150
552.00
7.52
1562.00
2.66
112.00
37.05
Xiaomi Mi 10 Lite 5g
4160
749.00
5.55
1541.00
2.70
163.00
25.52
Realme 6
4300
704.00
6.11
1104.00
3.89
162.00
26.54
Google Pixel 6a
4410
534
8.26
1935
2.28
111
39.73
Samsung Galaxy A52
4500
652.00
6.90
1239.00
3.63
165.00
27.27
Realme Gt
4500
574.00
7.84
1057.00
4.26
87.00
51.72
Tcl 10 Pro
4500
465.00
9.68
889.00
5.06
133.00
33.83
Black Shark 4 Pro
4500
425.00
10.59
937.00
4.80
29.00
155.17
Poco F4
4500
554.00
8.12
1141
3.94
98
45.92
Oneplus Nord 2t
4500
693
6.49
1492
3.02
121
37.19
Redmi Note 11 Pro Plus 5g
4500
525.00
8.57
1211
3.72
24
187.50
Poco F3
4520
657.00
6.88
1840.00
2.46
122.00
37.05
Poco F4 Gt
4700
365.00
12.88
1082
4.34
38
123.68
Poco F2 Pro
4700
1150.00
4.09
1536.00
3.06
180.00
26.11
Poco M3 Pro
5000
657.00
7.61
1647.00
3.04
131.00
38.17
Poco X4 Pro
5000
643.00
7.78
1361
3.67
74
67.57
Xiaomi Redmi Note 10s
5000
636.00
7.86
1556.00
3.21
161.00
31.06
Redmi 10
5000
664.00
7.53
1684.00
2.97
165.00
30.30
Tcl 30 Se
5000
650
7.69
1 225.00
4.08
172
29.07
Poco M4 Pro 4g
5000
723.00
6.92
1 500.00
3.33
77.00
64.94
Umidigi Bison Pro
5000
610.00
8.20
1632.00
3.06
255.00
19.61
Poco M4 Pro
5000
634.00
7.89
1600.00
3.13
123.00
40.65
Xiaomi 11t
5000
476.00
10.50
1204.00
4.15
97.00
51.55
Oneplus Nord N100
5000
808.00
6.19
1278.00
3.91
663.00
7.54
Motorola G8 Power
5000
912.00
5.48
2792.00
1.79
311.00
16.08
Xiaomi Redmi Note 10
5000
691.00
7.24
1728.00
2.89
193.00
25.91
Redmi Note 9t
5000
766.00
6.53
2054.00
2.43
148.00
33.78
Redmi 10a
5000
682
7.33
1820
2.75
163
30.67
Samsung Galaxy A21s
5000
729.00
6.86
1283.00
3.90
166.00
30.12
Poco X5 5g
5000
493
10.14
1058
4.73
228
21.93
Redmi 9a
5000
694.00
7.20
1902.00
2.63
195.00
25.64
Umidigi Bison
5000
550.00
9.09
1471.00
3.40
238.00
21.01
Redmi 9c
5000
656.00
7.62
1915.00
2.61
170.00
29.41
Redmi Note 11
5000
592.00
8.45
1 376.00
3.63
69.00
72.46
Xiaomi Redmi Note 9s
5020
663.00
7.57
1876.00
2.68
224.00
22.41
Xiaomi Redmi Note 9
5020
650.00
7.72
1808.00
2.78
162.00
30.99
Xiaomi Redmi Note 10 Pro
5020
625.00
8.03
1557.00
3.22
213.00
23.57
Poco X4 Gt
5080
726.00
7.00
1538
3.30
113
44.96
Umidigi F2
5150
927.00
5.56
1854.00
2.78
299.00
17.22
Poco X3
5160
653.00
7.90
1654.00
3.12
181.00
28.51
Poco X3 Pro
5160
648.00
7.96
1688.00
3.06
138.00
37.39
Doogee S58 Pro
5180
845.00
6.13
1908.00
2.71
177.00
29.27
Xiaomi Mi Note 10 Lite
5260
827.00
6.36
1609.00
3.27
208.00
25.29
Ulefone Armor 7e
5500
768.00
7.16
1140.00
4.82
179.00
30.73
Poco M3
6000
842.00
7.13
1898.00
3.16
217.00
27.65
Doogee S96 Pro
6350
929.00
6.84
1405.00
4.52
424.00
14.98
F150 R2022
8300
879.00
9.44
1498.00
5.54
243.00
34.16
Oukitel Wp18
12500
2 733.00
4.57
2859
4.37
362
34.53
helpHow to read these figures? The battery capacity is an important element in determining the autonomy of a phone but it is not the only factor. A phone with a large battery may have a shorter battery life if it consumes more power. If I had to take an example from everyday life, I would use the universe of the car. If a car has a large fuel tank, it should be able to drive a longer distance unless its average fuel consumption is higher. The battery efficiency score works the same way, it should be as low as possible and represents the energy consumption of the phone. These differences in efficiency are often related to the brightness of the screen, large bright screens will tend to consume more energy and even if they have a large battery, their range will be shorter.
In summary With a 5000 mAh battery and a phone that doesn't require a lot of performance, I should have good autonomy. Tests show that this is indeed the case but with a small downside. When the screen is switched on at full power, consumption rises exponentially because with 100% brightness, the Redmi 9c consumes 3 times more energy than at 50%.[b][b]This can be seen in the following graph:[b]
[b]The consumption is linear but the battery discharges 3 times faster when the brightness is 100%. With 50% brightness, I obtained more than 32 hours of autonomy, which is an excellent score.[b][b]The battery charging time is average for this type of phone. It is not completely linear, the last percentages take longer.[b][b]
[b][b]With 32 hours of autonomy in continuous use, you should be able to last 3 to 4 days in regular use without any problem, so the Redmi 9c has a very good autonomy.[b][b]
Photo camera test
To test the quality of photos produced by a phone, I do a technical test (resolution, sharpness, chromatic aberration,...) in studio (identical conditions) to evaluate the technical part objectively. From the second half of 2020, I built my own laboratory to take completely objective technical measurements. I then take pictures in real conditions to see how the camera performs. I then evaluate these photos according to my criteria but I publish the photos so that you can evaluate the result according to your criteria.[b]
Hardware
Selfie / resolution : 5 Resolution : 13 mm wide angle : 3.43 mm
Xiaomi did not communicate any information about the photo sensors, so I don't know what type of sensor was used in the Redmi 9c. Looking at the specifications, I couldn't find a similar sensor in the other phones I tested. [b][b]The main sensor is a 3.43mm sensor with 13 million pixels. There is no ultra wide angle sensor. This sensor is also used in the Redmi 9a.[b][b][b]Default app[b]The default photo application of the Redmi 9c is the same as in most Xiaomi running MIUI 12. The phone's poor performance is felt when using the photo application as it reacts slower than on other mid-range models. Switching from one mode (e.g. photo to video) to the other will be done with low latency.[b][b][b]
Photo quality
Photo test / studio[b]Main sensor[b][b]
[b][b]I was positively surprised by the quality of the photo of the Redmi 9c in the studio. I was expecting a bad result but it is not the case. The photo is a bit underexposed but the sharpness is really good for a phone in this price range. The colours look pretty good too even though the lack of contrast gives the impression that a veil is covering the photo. [b][b][b]Analysis of the colorimetry reveals that the Redmi 9c deviates from the norm mainly on greens and blues. The colorimetric deviations of the other colours are in the average.[b][b]
[b][b]If I look at where these colours deviate, I see that green deviates towards yellow, blue deviates towards a lighter blue. Photos with a blue sky should therefore appear with a lighter blue than in reality. The vegetation will probably take on a warmer colouring.[b]
[b][b][b]Photo test / sunny[b]
[b][b]For less than 100€, you can't expect to find a phone capable of producing very good photos...and yet this Redmi 9c is doing quite well! [b][b]The technical test of the photo showed that the phone was going to produce blues that were a bit too light and greens that were slipping towards yellow. This can be seen in this photo without it becoming a problem. Apart from these two elements, the colours are well restored. The sharpness is also good. [b][b]If I compare the photo with the price with a better phone at the same time, this is what it looks like:[b]
[b][b][b]Here we see that the blues are deeper, the green does not slide towards yellow and the colour temperature is generally cooler.[b][b]Here are some other pictures taken with the Redmi 9c which confirm the observations:[b]
4add_a_photo
[b][b][b][b]Photo test / cloudy[b]
[b][b]The Redmi 9c is put in difficulty when the light decreases because all the vegetation is in an underexposed zone and the sky shows a significant overexposure. The sharpness is correct but with such a difference between the exposure areas, the photo loses a lot of detail. [b][b]
3add_a_photo
[b][b][b]Test photo / night[b]Not yet available / tested[b][b][b]
Video quality
Stabilisation[b][b][b]The Redmi 9c does not have stabilisation, so shocks are not dampened, but in this price range no phone offers stabilisation.[b][b]Video normale conditions[b][b]The light conditions were not ideal for the video test but I think the Redmi 9c does really well for a phone under 100€. The sharpness is good, the focus is fast and the movement is not too jerky.[b][b]The colours are not always correct and the exposure could be better but again in this price range the result is more than correct.[b][b]Video low light[b]Not yet available / tested[b][b]
Audio quality
To test the quality of the phone's audio output, I connect the device's audio output to a measuring tool, then play sounds on all frequencies and measure the differences between the original sound and the sound produced by the phone. In this way I measure the phone's ability to correctly reproduce all sounds.[b]
I first tested the Redmi 9C in subjective listening and without headphones, the sound quality of the loudspeaker is not very good. The sound is quite muffled and the highs are exaggerated. Fortunately, the sound is much better when listening with headphones. [b][b]The Redmi 9C delivers good sound quality but lacks a little power. In this price range, this is quite normal, I would even say that the sound is technically at the level of phones over 150€.[b][b]Frequency Response[b]This test is intended to test the device's ability to correctly reproduce all frequencies. The white line in the middle of the graph is the ideal situation and the other colors come from tests on different phones. A deviation from the reference line indicates a deviation from the ideal situation. To see good sound at all frequencies, it is therefore necessary to get as close as possible to the reference line.
[b][b]I compared the Redmi 9C with the Redmi Note 9 and got a very comparable result. They both have a very similar performance with a slight quality stall at around 2khz which becomes more pronounced above 10khz. This can be heard if you are used to listening to music on a good quality device but for the average person I imagine the sound quality will be quite acceptable.[b][b]Dynamic Range[b]This test is designed to test a phone's ability to play sounds at different volume levels. Here too, the phones must be as close as possible to the reference.
[b]I again compared the Redmi 9C to the Redmi Note 9 and was surprised to see that the Redmi 9C performs better than the Redmi Note 9 when the volume increases. The Redmi 9C offers a more powerful sound than the Redmi Note 9 with better stability across all frequencies. The Redmi Note 9 suffers from a rather obvious power problem.[b][b]Noise Level[b]This test aims to identify if the device under test is able to reproduce sounds without too much noise. A high score indicates a low parasite rate, a lower score indicates a higher presence of parasites.
[b][b]The Redmi 9C has no interference problems and again outperforms the Redmi Note 9 in this test.[b][b]Concert recording[b]The purpose of this test is to measure the recording quality of the phone when there is a lot of ambient noise. Since I don't have the opportunity to go to a concert every time I test a phone, I simulate the noise of a concert in a closed environment.Not yet available / tested[b][b]
Screen quality
To test the screen, I use a colorimetric probe that measures the color accuracy of a screen, as well as other parameters to see if a screen is able to correctly reproduce an image. I also test the brightness level to determine if the screen will be able to display an image in full sunlight.[b]
Screen size : 6.53 Resolution : 720 x 1600 Ratio : 20:9 Type : IPS LCD % occupancy : 81 dE white : 4.9 dE red : 3.6 dE green : 2.7 dE blue : 1.9 dE jaune : 1.2 dE cyan : 2.7 dE magenta : 1.5 White temperature : 6238 Contrast : 1704:1 Brightness : 380
Colorimetry[b]
[b]The Redmi 9c uses an LCD-type screen that occupies 81% of the space with a resolution of 720x1600. The pixel density is lower than average, so the pixel deviation is slightly visible if you pay attention.[b][b]At the colorimetric level I measured a deviation dE of 2.6, this is an excellent score. However, you need to change the display configuration to set the colour temperature back to "standard" in the display settings otherwise the phone will present a poorer colourimetry.[b][b][b]Top 10 - ranking of the best screens by colorimetry 1. Poco X4 Gt dE = 0.6 2. Xiaomi Mi 10 Lite 5g dE = 0.73 3. Xiaomi Mi 10t Pro dE = 0.83 4. Redmi Note 11 dE = 0.91 5. Google Pixel 6a dE = 1.01 6. Google Pixel 5 dE = 1.11 7. Realme Gt dE = 1.17 8. Xiaomi Mi 11 Lite dE = 1.19 9. Xiaomi Redmi Note 8 dE = 1.2 10. Xiaomi Redmi Note 10 dE = 1.23
Number of smartphones in the ranking:71 Position of this smartphone in the ranking:39/71
Note: the colorimetric difference is measured in dE. After three, the human eye will perceive a colorimetric difference, so the dE should be the lowest. The tests were all carried out with a colorimetric probe. [b]Brightness / Contrast[b]I measured a luminosity of 380 cd/m² with my probe, which is a fairly average score. The Redmi 9c also has a "sunlight type" parameter to allow a better reading of the screen in full sunlight. This parameter does not give enough brightness to the screen to be perfectly readable in full sun.[b][b] I measured a contrast ratio of 1704:1 with my probe, which is an above average score for this type of screen.[b][b]The Redmi 9c may be an entry-level phone, but it can compete with more expensive phones like the Samsung Galaxy A21s.[b][b]Light Absorption/Reflection[b]The smartphone screen reflect light and sometimes turn them into a real mirror. This mirror effect makes it harder to read. [b][b]The absorption index below indicates the percentage of light absorbed by the screen. The readability of a screen is better when the absorption index is high.[b][b]
Phone tested:
% light absorption
Samsung Galaxy S10+
58
Xiaomi Mi 9T Pro
52
Honor 9x
65
Redmi Note 9s
55
Motorola G8 Power
60
Realme 6
54
Umidigi F2
48
Poco F2 Pro
52
Redmi Note 9
56
Xiaomi Mi Note 10 Lite
53
Samsung Galaxy S20
47
Samsung Galaxy A21s
53
The phones tested have an average absroption rate of54 %
Biometry
The Redmi 9c is equipped with a fingerprint sensor on the back, this sensor works very well but is slower than average due to the poor performance of the phone.[b][b]
Operating system
The Redmi 9C runs on MIUI 12 and the experience is not degraded compared to another device using the same operating system. The reaction time is obviously slower than on a faster device but this does not affect the operation of the phone.[b][b][b]
Encoutered bugs
Not yet available / tested[b][b]
Accessories Redmi 9c
To better enjoy your experience with your smartphone, I offer links to all kinds of accessories that you might find useful
I assigned a score of 1 to 10 for each test that determines the strengths and weaknesses of a product. I am using 0 for criteria that have not (yet) been tested. A score of 1 to 3 indicates poor performance (and yes, it does), a score of 4 to 6 indicates average performance, a score of 7 to 8 indicates good performance, and a score of 9 and 10 indicates exceptional performance. . The score is calculated based on my measurements and when there are no measurements, it is a subjective opinion based on my experience.
The scores are not static, they change over time because the performance of new products changes and this must be taken into account.
Redmi 9c
Finish quality
6.00
6.00
Battery performance
8.00
8.00
CPU performance
3.00
6.5
GPU performance
3.00
6.5
Screen quality
6.00
7.00
Photo quality
5.50
5.00
Video quality
5.50
5.00
Wi-Fi performance
5.00
7.00
Mobile download speed
5.00
5.00
Mobile network sensitivity
7.00
6.00
Frequency coverage
7.00
7.00
Audio quality
6.00
6.00
GPS performance
6.00
6.00
Operating system
7.00
8.00
Overall score
80
89
Global ranking 1. Black Shark 4 Pro 114 / 140 2. Realme Gt 112.5 / 140 3. Oneplus Nord 2t 111.5 / 140 4. Poco F2 Pro 111.5 / 140 5. Samsung Galaxy S20 111 / 140 6. Poco F4 Gt 110.5 / 140 7. Google Pixel 5 109.6 / 140 8. Poco F3 108.5 / 140 9. Google Pixel 6a 108 / 140 10. Poco X4 Gt 108 / 140 11. Poco X3 Pro 107.5 / 140 12. Samsung Galaxy S10+ 107 / 140 13. Xiaomi 11t 107 / 140 14. Redmi Note 11 Pro Plus 5g 106.5 / 140 15. Xiaomi Mi 9t Pro 106 / 140 16. Xiaomi Redmi Note 10 Pro 105.5 / 140 17. Tcl 10 Pro 104 / 140 18. Samsung Galaxy A52 104 / 140 19. Xiaomi Mi 11 Lite 104 / 140 20. Redmi Note 11 Pro 103 / 140 21. Poco X4 Pro 102.5 / 140 22. Poco M4 Pro 4g 102 / 140 23. Xiaomi Redmi Note 10s 102 / 140 24. Poco M4 Pro 101.5 / 140 25. Xiaomi Mi 10 Lite 5g 101 / 140 26. Poco X3 101 / 140 27. Xiaomi Mi Note 10 Lite 101 / 140 28. Xiaomi Redmi Note 10 101 / 140 29. Redmi Note 11 101 / 140 30. Redmi Note 9t 100.5 / 140 31. Xiaomi Redmi Note 8 Pro 100 / 140 32. Poco X5 5g 98.5 / 140 33. Doogee S96 Pro 98 / 140 34. Poco F4 98 / 130 35. Xiaomi Mi 9 Lite 98 / 140 36. Poco M3 Pro 98 / 140 37. Xiaomi Redmi Note 9s 98 / 140 38. Redmi 10 97.5 / 140 39. Xiaomi Redmi Note 8 97 / 140 40. F150 R2022 95 / 140 41. Umidigi Bison Pro 95 / 140 42. Poco M3 94.5 / 140 43. Xiaomi Redmi Note 7 94 / 140 44. Realme 6 93 / 140 45. Umidigi A9 Pro 92 / 140 46. Umidigi Bison 92 / 140 47. Tcl 30 Se 92 / 140 48. Oukitel C21 89.5 / 140 49. Xiaomi Redmi Note 9 89 / 140 50. Xiaomi Mi A3 89 / 140 51. Motorola G8 Power 89 / 140 52. Nokia 5.3 89 / 140 53. Oneplus Nord N100 88.5 / 140 54. Honor 9x 88 / 140 55. Xiaomi Mi 8 Lite 86 / 140 56. Meizu Note 9 86 / 140 57. Unihertz Tank 85 / 120 58. Xiaomi Redmi Note 5 85 / 140 59. Poco M5 84.5 / 120 60. Umidigi S3 Pro 83 / 140 61. Samsung Galaxy A21s 82 / 140 62. Umidigi F2 82 / 140 63. Oukitel Wp18 81 / 140 64. Redmi 9a 81 / 140 65. Redmi 9c 80 / 140 66. Ulefone Armor 7e 80 / 140 67. Doogee S58 Pro 78.5 / 140 68. Honor 8x 78 / 140 69. Umidigi F1 77 / 140 70. Huawei Y6 2019 74 / 140 71. Xiaomi Mi 10t Pro 57 / 70 72. Redmi 10a 14 / 20 73. Elephone U5 0 / 0
Test / Review conclusion
The Redmi 9C is an entry-level phone that has started to be sold at around €100. For this price, you won't find many phones with a large screen, a large battery, several photo sensors, ... Xiaomi has once again managed to establish itself in a price segment with a proposal that makes sense.[b][b]So, yes, the Redmi 9C is not a performance war machine but it is probably not the priority of buyers of this type of phone. It's slower than most phones I've tested but it's not the slowest. [b][b]The Redmi 9C should be seen as a lighter version of the Redmi Note 9 which costs around 50€ more and it even allows itself to be better than the Redmi Note 9 in some aspects. [b][b]The Redmi is not a "simple" phone as it runs on MIUI 12 like the other Xiaomi phones, it should be seen as a complete smartphone with some concessions such as performance.[b][b][b]Strengths[b]Prices[b]Battery life[b]4G network sensitivity[b][b][b]Weaknesses[b]Slow[b]MicroUSB port instead of USB-C[b]Wifi only in 2.4Ghz[b]Download speed[b][b][b]Alternatives to this product[b][b]Not yet available / tested[b][b]
Laurent Willen Instead of watching nonsense on TV or YouTube, I spend my time in the evenings testing products and sharing my passion for technology, travel and photography.
I run this site in my own name and completely independently, no one pays me to do so.
I have more than 20 years of experience in the digital world, I have managed and developed many high traffic websites in companies in Belgium such as Mobistar, Microsoft, Immoweb, BrusselsAirlines, Proximus, Orange,...
This blog is not my main activity, I receive more than 2000 emails per year that I have to answer in my free time. To be able to continue to help you, you can support me by purchasing your products through my links. It costs you absolutely nothing and it keeps me going.
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Laurent Willen
