On this page:
Price Redmi 9a
First configuration
CPU / GPU Performance
Benchmark Antutu/3DMark
Network performance
Wifi performance
GPS performance
Battery range
Photo camera test
Photo quality
Video quality
Audio quality
Screen quality
Operating system
Test / Review conclusion
Questions answers

Redmi 9A test / review

Redmi 9A test / review : best phone under 100€?
Category: Tests / Reviews

I usually test phones between 200 and 300€ with some exceptions above 300€. I recently tested the Redmi 9C which was sold for 99€ and I thought I would test an even cheaper phone with the Redmi 9A which I bought for 79€.[b][b]This type of phone is definitely less fun to test than a top of the range phone but I can't neglect this part of the market. Even before I write my conclusion, I know that this phone will not perform as well as a 200€ phone, I'm not going to try to kick an open door. [b][b]What will be interesting, however, is to see if the gap between this phone and some of the more expensive competitors is really significant. The Redmi 9C was surprising, the Redmi 9A has many of the same features as the 9C, so will it become the best phone for under €100?[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

Xiaomi 11T: test / review / photo quality
Google Pixel 5 test / review
TCL 10 Pro: test / review / price
Samsung Galaxy A21s test / review
Samsung Galaxy A52: test / review
Umidigi Bison Pro : test / review
Poco X3 Pro : test / review
Redmi 10: test / review
iiiF150 R2022 : test / review
Realme 6 test, review and price

Price Redmi 9a

The list below shows the prices for the Redmi 9a 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]
2021-11-30 15:30
80 EUR
* Smartphone Redmi 9A Xiaomi* grün(türkis) * 32GB 5000mAh *Nature Green*...
2021-11-30 15:22
86 EUR
Xiaomi Redmi 9AT Smartphone, 2 GB + 32 GB, Dual Sim, Grigio (Granite Grey)...
2021-11-30 18:46
89 EUR
Xiaomi Redmi 9AT 32GB Dual SIM Granite Gray EU...
2021-11-30 18:39
89 EUR
Xiaomi Redmi 9AT 32GB Dual Sim Granite Gris...
2021-11-30 18:10
89 EUR
Xiaomi Redmi 9A Versión Global 6.53" HD+ 5000 mAh Dual SIM Garantía 2 Años...
2021-11-30 07:30
95 EUR
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!


02/09/20: Purchase of the Redmi 9A for 79€ at Edwaybuy[b]04/09/20: Telephone reception[b]20/09/20: start of the test, I didn't have time to start it earlier.[b][b]

Why this phone?

Even if I test several phones at the same time, there is always one phone that I use more than the others. At the moment I am mainly using the Poco X3. This phone has absolutely nothing to do with the Redmi 9A and yet the Redmi 9A is far from ridiculous.[b][b]While testing the Redmi 9C, I realized that even though this type of phone is slower, it offers all the basics of a smartphone for a much more affordable price than what is usually found on the market. The Redmi 9A has a lot in common with the Redmi 9C, so it is highly likely that Xiaomi will once again drive the nail in by positioning this phone as a master bargain in this price range.[b][b]


[b][b]The Redmi 9A is packed in a box identical to what Xiaomi does for its other models. The box contains the phone, charger, micro USB cable and documentation. The box does not contain a transparent cover. [b][b]I was a bit surprised to find a MicroUSB port instead of USB-C, it's been a long time since I've seen a phone with this kind of configuration.[b][b][b][b]
Length : 164.9
Width : 77.1
Thickness : 9
Weight : 194
Jack output : Yes
USB Type : Micro USB
Infrared port : No

First configuration

I couldn't take a screenshot of the startup procedure, the capture feature wasn't working. I had the same problem on the Redmi 9C, I guess it's a voluntary choice of Xiaomi.[b][b]The startup procedure follows the same steps as other Xiaomi phones under MIUI 12, there are no surprises here (good or bad).[b][b]


[b][b]The Redmi 9A is an entry-level phone, so you won't find a glass back with spectacular effects here. I was expecting a fairly basic level of finish, it is indeed the case but the level of finish is quite correct. I have tested more expensive phones that had a lower level of finish.[b][b]
[b][b]The back is made of single coloured plastic with a slightly textured surface. This type of material allows fingerprints to show up fairly quickly but there is nothing shocking here.[b][b]On the back is the photo module consisting of a single sensor and an LED lamp. This is the main feature of this 9A if I compare it with the 9C which has several sensors. [b][b]Here is a comparison with the Redmi 9C[b]
[b][b]As a whole the Redmi 9A has a fairly classic configuration with a SIM drawer on the left, this drawer can hold 2 SIM cards and a memory card without having to sacrifice a SIM card. On the right are the usual volume buttons and the start button. These buttons are correctly positioned. [b][b]Above is the audio jack connector and underneath is a micro USB port, a sound sensor and a loudspeaker. The Redmi 9A has only one input (bottom).[b][b]For this price level there, the finishing level is really good.[b][b][b][b]


[b]The information below comes from the Device Info HW application. The application provides detailed technical information about the tested phone.[b][b]I tested the Redmi 9A in 2Gb / 32 Gb version, it is the basic version which answers to the code name M2006C3LG.[b][b]The technical specifications are nothing extraordinary except that for this price, I find it quite correct. I see a lot of criticisms about the performance of this phone but for 79€, I think it's quite correct.[b][b]

CPU / GPU Performance

CPU : Mediatek Helio G25
GPU : IMG PowerVR GE8320 600MHz
Memory (RAM) : 2 - 4 Gb
Storage : 32-64Gb
[b][b]The Redmi 9A is equipped with a Mediatek Helio G35 processor, which is an entry-level processor that is not designed to offer good performance. It will allow you to use all the features of the phone without too much difficulty but access to applications, loading times or switching between applications may be quite slow.[b][b]The Redmi 9A is equipped with an IMG PowerVR GE8320 680MHz graphics processor and here again, it is not the performance that you will need to remember from this graphics processor. It will allow you to display photos, play videos, play some games but with concessions on the level of graphics. Fortunately, the screen uses a lower resolution than other mid-range phones, which makes the work of the graphics processor lighter.[b][b]

Benchmark Antutu/3DMark

Testing the Redmi 9A with Antutu doesn't make a lot of sense because the performance will in no way be comparable with the phones I'm used to testing. I have a score of around 100,000 points, which is slightly lower than the Redmi 9C but much higher than the Huawei Y6 which is much more expensive.[b][b]So it is not a phone for those who play 3D games but in the next paragraph I will demonstrate that it is not a dead end.[b][b]
Antutu score : 103411
[b]Top 10 - performance ranking based on Antutu
1. Realme Gt - 811858
2. Oppo Find X2 Pro - 605184
3. Oneplus 8t - 595000
4. Poco F3 - 589677
5. Xiaomi Mi 10t Pro - 581650
6. Oneplus 8 Pro - 579417
7. Xiaomi Mi 10 - 579114
8. Poco F2 Pro - 569559
9. Samsung Galaxy S20 Fe - 565000
10. Xiaomi 11t - 527127

Number of smartphones in the ranking:133
Position of this smartphone in the ranking:109/133

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]I test all phones with PUBG Mobile because this game needs a minimum of performance to be playable. I was pleasantly surprised by the result. PUBG Mobile is a game that has been well designed because it automatically adapts its graphics level to the phone's capabilities in order to accommodate a maximum number of players. It is therefore possible to play PUBG Mobile with a Redmi 9A but the graphics are at the lowest level to ensure a smooth gameplay. The game is set in "fluid" mode to ensure a correct experience.[b][b]The video shows quite well that the textures are not very nice but the game is perfectly playable. I sometimes noticed a few slowdowns but that didn't stop me from playing. [b][b]

Network performance

The Redmi 9A supports most 4G frequencies used in Europe including B28 (700 Mhz). For an entry-level phone, the frequency coverage is as good as a mid-range phone.[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 : 0.398
SAR / body : 1.186
Volte : Yes
NFC : No
Number measurements : 1000
Average signal : -96.48
Download speed : 49
Upload speed : 35
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-881600
Xiaomi Redmi Note 5-91.305600
Xiaomi Mi 9 Lite-93788
Samsung Galaxy A70-94.5111975
Nokia 5.3-94.98531
Realme 6-95.142301
Xiaomi Redmi Note 8 Pro-95.9221599
Xiaomi Mi A3-95.951000
Huawei Y6 2019-95.951199
Doogee S58 Pro-96.22856
Redmi 9a-96.481000
Meizu Note 9-96.68937
Motorola G8 Power-96.881032
Xiaomi Redmi Note 7-97.011430
Redmi 9c-97.041000
Umidigi S3 Pro-97.131200
Xiaomi Redmi Note 8-97.34879
Samsung Galaxy A21s-97.781000
Umidigi F1-97.82298
Ulefone Armor 7e-98.71000
Xiaomi Mi Note 10 Lite-991000
Honor 9x-99.14899
Xiaomi Redmi Note 9s-99.41860
Poco F2 Pro-99.81247
Xiaomi Redmi Note 9-100.791785
Xiaomi Mi 10 Lite 5g-100.881198
Poco X3-101.19821
Umidigi F2-101.47712
[b]I made about 1000 measurements in 4G to get an average signal of -96.48 dBM, this is an above average score and for Xiaomi this is a good score as I usually get lower scores with this brand.[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:MeasurementsAvg 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 Pro669-93.69-95.84-90 / -95-92 / -98
Poco F2 Pro1438-91.02-94.99-89 / -94-94 / -96
Xiaomi Mi 10 Lite 5g1645-90.77-95.02- 88 / -98-95 / -100
Poco X3821-94.89-103.19-91 / -97.7-101 / -104
Umidigi Bison2343-92.71-96.46-90 / -99-94 / -102
Oukitel C211101-92.04-94.99-90 / -97-92 / -95
Poco M31116-92.09-91.74-88 / -98-90 / -99
Xiaomi Mi 10t Pro1071-90.61-94.03-88 / -94-94 / -96
Umidigi A9 Pro981-90.40-94.01-88 / -95-93 / -95
Redmi Note 9t1201-92.149-91.71-90 / -97-91 / -97
Xiaomi Redmi Note 10999-92.35-93.99-88 / -97-92 / -98
Xiaomi Redmi Note 10 Pro877-89.72-90.56- 88 / -92-89 / -95
Poco X3 Pro1876-91.45-92.91-90 / -94-90 / -96
Poco F31382-90.79-94.2-89 / -94-93 / -98
Oneplus Nord N100896-91.23-96.005-88 / - 99-96 / -99
Xiaomi Mi 11 Lite2875-91.36-91.49-87 / -96-90 / -96
Samsung Galaxy A521427-89.27-93.39-87 / -98-92 / -96
Doogee S96 Pro1259-94.2-91.21-90 / -102-88 / -95
Xiaomi Redmi Note 10s957-92.07-97.62-90 / -102-96 / -102
Poco M3 Pro1247-91.76-102.97-99 / -104-88 / -98
Realme Gt843-96.49-94.02-93 / -101- 92 / -96
F150 R20221002-92.4-105.1-90 / -97-98 / -110
Umidigi Bison Pro936-94.2-104.98-91 / -98-95 / -105
Redmi 102141-94.74-100.92-92 / -98-99 / -101
Tcl 10 Pro871-93.43-94.001-92 / -96-93 / -95
Poco M4 Pro570-93.71-96.78-91 / -98-95 / -99
[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:29/30

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]I got a 4G download speed between 40 and 50 Mbps. This is quite low compared to the other phones I tested but it shouldn't stop you from using the phone for common tasks like surfing the internet, watching videos or even playing games that don't require a lot of resources.[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 : 38
Signal / close : -19
Signal / distant : -63
Wifi signal[b]I measured a signal of -19 dBm near the router, this is a good score indicating good wifi sensitivity. I measured -63 dBm remotely, this is an excellent score which is explained by the frequency used by the Redmi 9A. The phone uses the 2.4Ghz frequency which allows you to pick up a signal further away but this is at the expense of the download speed.[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. Oneplus Nord N100 -15dBm
6. Poco X3 Pro -15dBm
7. Poco F3 -15dBm
8. Redmi Note 9t -15dBm
9. Samsung Galaxy A52 -17dBm
10. Xiaomi Redmi Note 10s -17dBm

Number of smartphones in the ranking:52
Position of this smartphone in the ranking:22/52

[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 9A uses the 2.4Ghz frequency in wifi, this is clearly a weak point of the phone as most phones nowadays support the 5Ghz frequency which allows a better download speed.[b][b]I got a download speed of just under 50 Mbps. This is not much compared to what I got with other phones but in principle the Redmi 9A is not for people who need speed. With 50 Mbps it is possible to surf or watch videos without too many problems. The phone is not capable of displaying a video in 1080p, so the speed problem does not arise anyway.[b][b][b]Top 10 - wifi download speed ranking
1. Poco F3 398Mbps
2. Poco X3 Pro 389Mbps
3. Xiaomi Redmi Note 10 Pro 367Mbps
4. Samsung Galaxy S20 351Mbps
5. Poco F2 Pro 341Mbps
6. Redmi Note 9t 332Mbps
7. Realme Gt 330Mbps
8. Doogee S96 Pro 328Mbps
9. Xiaomi Redmi Note 10s 325Mbps
10. Poco M3 Pro 323Mbps

Number of smartphones in the ranking:51
Position of this smartphone in the ranking:50/51

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.

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]I obtained an accuracy of 1m with the GPS position test on the Redmi 9A. This is the best score I can get on this kind of test. The accuracy is therefore very good but I would advise against using this phone for fast movement tracking as the weakness of its processor may create latency on the display.[b][b][b]Top 10 - GPS accuracy ranking
1. Oukitel C21 1m
2. Redmi 9a 1m
3. Doogee S96 Pro 1m
4. Xiaomi Redmi Note 10s 1m
5. Xiaomi Redmi Note 9 1m
6. Umidigi Bison Pro 1m
7. Redmi 10 1m
8. Poco M4 Pro 1m
9. Redmi 9c 2m
10. Umidigi Bison 2m

Number of smartphones in the ranking:28
Position of this smartphone in the ranking:2/28

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.

Battery range

Capacity : 5000
Fast charge : Yes
W max : 10
Range (100% brightness) : 694.00
Range (50% brightness) : 1902.00
Charging time : 195.00
Discharge speed (100%) : 0.14
Discharge score (100%) : 7.20
Discharge speed (50%) : 0.05
Discharge score (50%) : 2.63
Charging speed : 0.51
Charging score : 25.64
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 9A has a capacity of 5000 mAh and has discharged from 100% to 1% in 694.00 minutes with 100% brightness, it has discharged from 100% to 1% in 1902.00 minutes with 50% brightness. I obtain in this way an average discharge speed of 0.14% per minute with 100% luminosity and 0.05% per minute with 50% luminosity, the consumption is therefore 7.20 mA per minute with 100% luminosity and 2.63 with 50% luminosity. To be able to compare the efficiency of the phone and its influence on the battery, you have to compare the 7.20 (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 9A has a capacity of 5000 mAh and has been charged from 1% to 100% in 195.00 minutes. This gives me an average charging speed of 0.51% per minute and therefore an increase of 25.64 mA per minute. To compare the performance of the Redmi 9A compared to other phones, you should use the 25.64 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.

SmartphoneCapacity (mAh)Battery life (minutes)Efficiency ScoreBattery life (minutes) / 50%Efficiency Score / 50%Charging time.Score charging
Oukitel C214000497.008.051324.003.02167.0023.95
Honor 9x4000770.005.191333.003.00151.0026.49
Nokia 5.34000549.007.291096.003.65199.0020.10
Samsung Galaxy S204000565.007.081217.003.29136.0029.41
Umidigi A9 Pro4150552.007.521562.002.66112.0037.05
Xiaomi Mi 10 Lite 5g4160749.005.551541.002.70163.0025.52
Realme 64300704.006.111104.003.89162.0026.54
Realme Gt4500574.007.841057.004.2687.0051.72
Samsung Galaxy A524500652.006.901239.003.63165.0027.27
Tcl 10 Pro4500465.009.68889.005.06133.0033.83
Poco F34520657.006.881840.002.46122.0037.05
Poco F2 Pro47001150.004.091536.003.06180.0026.11
Oneplus Nord N1005000808.006.191278.003.91663.007.54
Xiaomi Redmi Note 10s5000636.007.861556.003.21161.0031.06
Poco M3 Pro5000657.007.611647.003.04131.0038.17
Xiaomi Redmi Note 105000691.007.241728.002.89193.0025.91
Redmi Note 9t5000766.006.532054.002.43148.0033.78
Umidigi Bison Pro5000610.008.201632.003.06255.0019.61
Redmi 105000664.007.531684.002.97165.0030.30
Poco M4 Pro5000634.007.891600.003.13123.0040.65
Redmi 9a5000694.007.201902.002.63195.0025.64
Samsung Galaxy A21s5000729.006.861283.003.90166.0030.12
Motorola G8 Power5000912.005.482792.001.79311.0016.08
Redmi 9c5000656.007.621915.002.61170.0029.41
Umidigi Bison5000550.009.091471.003.40238.0021.01
Xiaomi Redmi Note 9s5020663.007.571876.002.68224.0022.41
Xiaomi Redmi Note 95020650.007.721808.002.78162.0030.99
Xiaomi Redmi Note 10 Pro5020625.008.031557.003.22213.0023.57
Umidigi F25150927.005.561854.002.78299.0017.22
Poco X35160653.007.901654.003.12181.0028.51
Poco X3 Pro5160648.007.961688.003.06138.0037.39
Doogee S58 Pro5180845.006.131908.002.71177.0029.27
Xiaomi Mi Note 10 Lite5260827.006.361609.003.27208.0025.29
Ulefone Armor 7e5500768.007.161140.004.82179.0030.73
Poco M36000842.007.131898.003.16217.0027.65
Doogee S96 Pro6350929.006.841405.004.52424.0014.98
F150 R20228300879.009.441498.005.54243.0034.16

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
[b][b]The Redmi 9A offers a good battery life provided that the brightness is not used at 100% because at this level of brightness the Redmi 9A offers average performance. With the screen on at 50%, I obtained a battery life of more than 32 hours and here, on the other hand, the Redmi 9A offers a good performance. In normal use, you should therefore be able to obtain an autonomy of 3 to 4 days.[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]


Selfie / resolution : 5
Resolution : 13
mm wide angle : 3.43 mm
The Redmi 9A is a simple phone, so it doesn't have a multitude of photo sensors on the back, there is only one. I don't have any information on the make or model of this sensor but it is probably the same sensor as the Redmi 9C which produces images of 13 million pixels and a focal length of 3.43mm.[b][b]Default app[b]The default photo application is about the same as on other Xiaomi phones. The Redmi 9A uses only one sensor, so there is only a photo and video mode. This photo application is designed for better equipped phones, so there is a bit too much information for such a simple phone. [b][b]The phone's weakness in performance will impact the use of the camera as there is latency in most actions coming from the camera. This does not prevent the camera from being used, but sometimes you have to be a little lenient.[b][b][b]

Photo quality

Photo test / studio[b]
[b][b]I usually take several pictures in the studio to test each sensor but as the Redmi 9A has only one sensor, I will only take one picture and compare it with the Redmi 9C which is the closest to the 9A.[b][b]
[b][b]The difference in colour is very visible between the two phones. The Redmi 9A produces an image that is too cold and this is quite curious as I think the sensor is the same as the 9C. This would mean that the treatment applied to the photo is different. The sharpness of the photo is however quite good for a phone of this price.[b][b][b]Photo test / sunny[b]
[b][b]The Redmi 9A only has a photo sensor, which makes it easier for me to work on my test. I didn't expect much with this phone as the entry-level phones I've tested so far were frankly bad at taking pictures. The Redmi 9A surprised me positively. The photos are not extraordinary, it's true, but for 79€ the result is really interesting. [b][b]The colour temperature is a bit too hot and depending on the brightness, the photo sensor will quickly fall into overexposure or underexposure but overall the technical quality of the photo is quite good.[b][b][b][b][b]Photo test / cloudy[b]
[b][b]The Redmi 9A is quickly put into trouble when the light is less favourable. Pictures are often either overexposed or underexposed but in this price range I don't really see a better alternative. The quality of the photos is quite acceptable.[b][b][b][b][b]Test photo / night[b]Not yet available / tested[b][b][b]

Video quality

Stabilisation[b][b][b]The Redmi 9A does not have video stabilisation and this is not surprising as video stabilisation is only available on much more expensive phones. This means that the vibrations are not damped and the pixel recalculation is clearly visible.[b][b]Video normale conditions[b][b]The Redmi 9A does not produce videos of extraordinary quality but I find that the phone does not fare too badly. The light and shadow management can quickly switch from one extreme to the other but when conditions are stable, the dynamics are not bad.[b][b]The video does tend to jerk and the pixel correction is clearly visible. This phone is therefore not recommended for fast movements. [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]
Frequency Respons : +0.03 / -0.11
Noise Level : -89
Dynamic Range : 89.1
THD : 0.000156
Intermodulation : 0.012
Stereo crosstalk : -86.6
With a 79€ phone I didn't expect to get a very good sound quality. Listening without headphones shows that the loudspeaker is struggling to reproduce frequencies correctly and the sound is not very powerful (and this is a good thing given that the sound quality is not very good).[b][b]With headphones, on the other hand, the sound quality is better, it's quite comparable with what I've heard on mid-range phones.[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]The Redmi 9A is capable of reproducing most frequencies correctly, it offers a sound quality very similar to the Redmi Note 9 which costs twice as much. It moves away from the reference quite quickly in the high frequencies but the deviation is not important before 10Khz.[b][b]The Redmi 9A and 9C probably share the same equipment as I have obtained almost identical results.[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]The Redmi 9A does not produce a very powerful sound but it is still more powerful than a Redmi Note 9. The performance is fairly even across all frequencies with a weakness in the low frequencies.[b][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]The Redmi 9A has no interference problems, it is clearly not the phone with the best sound quality, but for its price, it offers a completely correct sound performance.[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 : 5.8
dE red : 4.4
dE green : 1.8
dE blue : 2.8
dE jaune : 2.1
dE cyan : 3.9
dE magenta : 3.5
White temperature : 7335
Contrast : 1746:1
Brightness : 365
[b][b]I measured a colour difference ofE of [b]3.47 with my probe is a very good result for a phone of this price. I obtained this score by choosing the standard mode in the display settings because the factory settings are not correct. [b][b]The white deviates quite strongly from the normal temperature of 6500k, I measured 7335k, so the colouring of the display is a bit too warm.[b][b][b]Top 10 - ranking of the best screens by colorimetry
1. Xiaomi Mi 10 Lite 5g dE = 0.73
2. Xiaomi Mi 10t Pro dE = 0.83
3. Realme Gt dE = 1.17
4. Xiaomi Mi 11 Lite dE = 1.19
5. Xiaomi Redmi Note 8 dE = 1.2
6. Xiaomi Redmi Note 10 dE = 1.23
7. Xiaomi Redmi Note 10 Pro dE = 1.31
8. Samsung Galaxy S20 dE = 1.4
9. Poco M3 dE = 1.4
10. Xiaomi Mi 9 Lite dE = 1.46

Number of smartphones in the ranking:52
Position of this smartphone in the ranking:30/52

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 brightness of 365 cd/m², which is a very average score. Reading the screen in full sunlight will be difficult. The Redmi 9A offers a "sunlight" mode but the brightness will not be sufficient to ensure good brightness in strong light.[b][b] I measured a contrast ratio of 1746:1 with my probe, which is a very good score especially in this price range. So I am quite surprised to find a screen like this on a 79€ phone. This screen is not perfect but at this price I can hardly complain.[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 Pro52
Honor 9x65
Redmi Note 9s55
Motorola G8 Power60
Realme 654
Umidigi F248
Poco F2 Pro52
Redmi Note 956
Xiaomi Mi Note 10 Lite53
Samsung Galaxy S2047
Samsung Galaxy A21s53
The phones tested have an average absroption rate of54 %


The Redmi 9A has no biometric options, not even a fingerprint sensor on the back and that's a pity because you have to get used to unlocking the phone by hand, as was the case before the fingerprint sensors or facial recognition.[b][b]

Operating system

The Redmi 9A is marketed with MIUI 12, so it has the same features as the other Xiaomi (or Poco) phones. MIUI 12 runs without any problems on the Redmi 9A but the transition between screens or launching an application is not very fast, so don't be in too much of a hurry, but overall the phone works well.[b][b][b]

Encoutered bugs

Not yet available / tested[b][b]

Accessories Redmi 9a

To better enjoy your experience with your smartphone, I offer links to all kinds of accessories that you might find useful

Protective cover / case redmi 9a
Screen protection film redmi 9a
Memory card redmi 9a
USB Cable / Charger redmi 9a
Headphones redmi 9a
Bike rack redmi 9a

Compare Redmi 9a with the others

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 9A
Finish quality6.006.00
Battery performance8.008.00
CPU performance3.006.5
GPU performance3.006.5
Screen quality6.007.00
Photo quality5.505.00
Video quality5.505.00
Wi-Fi performance5.007.00
Mobile download speed5.005.00
Mobile network sensitivity7.006.00
Frequency coverage7.007.00
Audio quality6.006.00
GPS performance7.006.00
Operating system7.008.00
Overall score8189
Global ranking
1. Realme Gt 112.5 / 140
2. Poco F2 Pro 111.5 / 140
3. Poco F3 111.5 / 140
4. Samsung Galaxy S20 111 / 140
5. Poco X3 Pro 107.5 / 140
6. Samsung Galaxy S10+ 107 / 140
7. Xiaomi Redmi Note 10 Pro 106.5 / 140
8. Xiaomi Mi 9t Pro 106 / 140
9. Samsung Galaxy A52 104 / 140
10. Tcl 10 Pro 104 / 140
11. Xiaomi Mi 11 Lite 104 / 140
12. Xiaomi Redmi Note 10s 102 / 140
13. Poco M4 Pro 101.5 / 140
14. Xiaomi Mi 10 Lite 5g 101 / 140
15. Poco X3 101 / 140
16. Xiaomi Mi Note 10 Lite 101 / 140
17. Xiaomi Redmi Note 10 101 / 140
18. Redmi Note 9t 100.5 / 140
19. Xiaomi Redmi Note 8 Pro 100 / 140
20. Poco M3 Pro 98 / 140
21. Doogee S96 Pro 98 / 140
22. Xiaomi Redmi Note 9s 98 / 140
23. Xiaomi Mi 9 Lite 98 / 140
24. Redmi 10 97.5 / 140
25. Xiaomi Redmi Note 8 97 / 140
26. Umidigi Bison Pro 95 / 140
27. F150 R2022 95 / 140
28. Poco M3 94.5 / 140
29. Xiaomi Redmi Note 7 94 / 140
30. Realme 6 93 / 140
31. Umidigi A9 Pro 92 / 140
32. Umidigi Bison 92 / 140
33. Oukitel C21 89.5 / 140
34. Xiaomi Mi A3 89 / 140
35. Nokia 5.3 89 / 140
36. Motorola G8 Power 89 / 140
37. Xiaomi Redmi Note 9 89 / 140
38. Oneplus Nord N100 88.5 / 140
39. Honor 9x 88 / 140
40. Meizu Note 9 86 / 140
41. Xiaomi Mi 8 Lite 86 / 140
42. Xiaomi Redmi Note 5 85 / 140
43. Umidigi S3 Pro 83 / 140
44. Samsung Galaxy A21s 82 / 140
45. Umidigi F2 82 / 140
46. Redmi 9a 81 / 140
47. Redmi 9c 80 / 140
48. Ulefone Armor 7e 80 / 140
49. Doogee S58 Pro 78.5 / 140
50. Honor 8x 78 / 140
51. Umidigi F1 77 / 140
52. Huawei Y6 2019 74 / 140
53. Xiaomi Mi 10t Pro 57 / 70
54. Xiaomi 11t 16 / 20
55. Google Pixel 5 15 / 20
56. Elephone U5 0 / 0

Test / Review conclusion

I say it often but Xiaomi's strategy is to occupy as much territory as possible by placing a phone model in all price ranges. Obviously, it's not all about price, you still have to offer a good product.[b][b]Did Xiaomi succeed with this Redmi 9A? Yes, in this price range and with this level of equipment you really can't find much. The two most direct competitors are the Umidigi A7 and the Realme C11. So there are not many opponents to Xiaomi in this price range.[b][b]Even though I'm used to using faster phones, I didn't experience the test of this Redmi 9A as an unbearable nightmare. This phone is designed to meet basic needs such as making calls, sending messages/emails, surfing the internet and taking a few pictures. The Redmi 9A does it all right.[b][b]The Redmi 9A obviously has a bunch of flaws but they are choices in relation to the price. [b][b]I'll make an analogy with the car world to express how I feel about this phone. If this phone were a car, it would probably be a Dacia. So it doesn't make sense to compare a Dacia with a BMW (whatever the model) but the Dacia will get you from point A to point B like any other car. You'll probably go slower, with less comfort and less equipment, but you'll still get there.[b][b][b]Strengths[b]Price[b]Battery life[b]Network Sensitivity[b]GPS accuracy[b][b][b]Weaknesses[b]Slow[b]Download speed[b]Fluctuating photo quality[b][b][b]Alternatives to this product[b][b]Umidigi A7[b]Realme C11[b]


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