Our Opinion

The Samsung Galaxy M21 (4GB RAM, 64GB) is a slightly better phone, but the Xiaomi Redmi 9 Prime 64GB is significantly better value for money. Which phone should you buy? Depends on how much your want to spend!

Samsung Galaxy M21 (4GB RAM, 64GB)  Xiaomi Redmi 9 Prime 64GB 
Samsung Galaxy M21 Xiaomi Redmi 9
Buy Now Buy Buy
Excellence Score
34.1
32.7
Value for Money Score
76.9
83.9
Price ₹ 12,499 onwards ₹ 9,999 onwards
Launch Date (India) Mar, 2020 Aug, 2020
Expected Launch Date N/A N/A
Smartphone OS Android 10Expected update to next Android version Android 10Expected update to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.4 inches 6.53 inches
Screen Resolution 1080x2340 pixels (~ 403 pixels per inch) 1080x2340 pixels (~ 395 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 3 Yes, Corning Gorilla Glass 3
Display Type AMOLED IPS LCD
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED 2.5D Curved Glass, Sunlight Mode, Reading mode, Color temperature adjustment, Standard mode
Full Physical QWERTY Keypad
Processor 2.3 GHz 2 GHz
Processor Type Octa Core Octa Core
Processor Name Samsung Exynos 9611Ranked #37 in Mobile Processor Benchmarks Mediatek Helio G80Ranked #34 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Mali-G52 MC2
RAM 4 GB 4 GB
3G Yes Yes
4G Yes Yes
5G
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling Yes Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port USB-C USB-C
Primary Camera 48MP + 8MP + 5MP 13MP + 8MP + 5MP + 2MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (Full HD)
Other Camera Features 48MP: f/2.0 aperture; 26mm Focal Length; 1/2.0" Sensor Size; 0.8um Pixel Size; PDAF, 8MP: f/2.2 aperture; 12mm Focal Length; Ultra-wide; 1/4.0" Sensor Size; 1.12um Pixel Size, 5MP: f/2.2 aperture; Depth Sensor, Panorama, HDR, Video: [email protected]; [email protected]; EIS 13MP: f/2.2 Aperture; 28mm Focal Length; 1/3.1" Sensor Size; 1.12um Pixel Size; PDAF, 8MP: f/2.2 Aperture; 118-degree Ultra-wide; 1/4.0" Sensor Size; 1.12um Pixel Size, 5MP: f/2.4 Aperture; Macro Lens, 2MP: f/2.4 Aperture; Depth Sensor
Secondary Camera 20MP 8MP
Secondary Camera Features f/2.0 aperture, 26mm Focal Length, HDR F/2.0 Aperture, 1.12um Pixel Size, AI Beautify 4.0, Portrait mode, HDR, Screen Flash, Selfie timer, Face recognition, Palm shutter
Internal Memory 64 GB 64 GB
Expandable Memory Slot Yes, up to 512 GB Yes, up to 512 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes (Wireless) Yes (Wireless)
Dual SIM GSM+GSM GSM+GSM
Thickness 8.9 mmMedium 9.1 mmThick
Weight 188 gmMedium 198 gmHeavy
Width 75.1 mmOk for one-handed use 77.0 mmInconvenient for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant Yes, Splash resistant
Battery Capacity 6000 mAh 5020 mAh
Battery Standby N/A N/A
Battery Standby (3G) N/A N/A
Battery Talktime N/A N/A
Battery Talktime (3G) N/A N/A
Fast Charging Support Yes, 15W Fast Charging Yes, 18W Fast Charging
Included Fast Charger Yes, 15.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features Noise Filtration Noise Filtration
2-minute Review [Positives]
  • Decent looks and build quality - very similar to the Samsung Galaxy M31, with a a unibody polycarbonate design, and glossy finish on the back panel - the only major difference is the camera module which houses a triple rear camera
  • The plastic body keeps the phone feeling relatively lightweight at 188 grams, which is mighty impressive for a phone packing a big 6000 mAh battery
  • It also feels great to hold with a seamless curved panel that meets the display up front
  • Modern, Infinity-U front - bezels around the screen are slim, except for a slightly thick chin - you still get around 90 per cent screen-to-body ratio, which is great
  • Fingerprint sensor at the back is easy to reach and work very well
  • Gorgeous, 6.4-inch FHD+ Super AMOLED display with excellent viewing angles, and brightness levels - easily one of the best displays in the price bracket
  • It also comes with "Widevine L1" certification, which helps stream content in crisp HD resolution
  • Blacks are deep on the AMOLED display, which looks good with Night mode enabled
  • Samsung's OneUI is today one of the more clean, refined Android UIs that's especially well optimised for large displays like this
  • One UI also brings in other useful stuff, like a System-wide Dark mode (which turns the background completely black, and looks great on the M21's AMOLED display), and Always On Display option
  • Decent performance with the Exynos 9611 at the core (similar to Snapdragon 665) - the device is fairly quick to load up apps - multitasking is a breeze
  • Decent triple rear camera setup - a 48MP primary snapper, an 8MP ultra-wide lens and a 5MP depth sensor
  • In broad daylight, you'll get consistent, crispy shots with decent dynamic range and sharpness levels are respectable with the primary lens
  • The ultra-wide sensor, like on any budget phone, is a good addition - it takes social media-worthy images in great lighting conditions (in low-light, the quality dips and pictures look grainy and noisy, wide-angle shots also have barrel distortion at the edges)
  • Live Focus shots are quite good and the camera app does give you the option to set the level of blur before taking a shot - edge detection is very good and the Galaxy M21 does a good job of separating the subject from the background
  • The 20MP selfie camera is quite good and takes detailed selfies (though, in low light, the quality goes down a notch and results are grainy)
  • Monster 6000 mAh battery delivers an incredible 2-3 days of usage easily, making for one of the largest battery life smartphones currently available
  • Supports 15W fast charging
  • If you're someone who consumes a lot of content on their phone, the Galaxy M21 is a good phone for you, it has great AMOLED display, outstanding battery backup that will last you for days
  • Striking, shade shifting rear design - the Redmi 9 Prime's looks similar to the more expensive Poco X2 with its quad-camera arrangement in a circular patch
  • The front is the routine, dew-drop notch with decent bezels
  • The fingerprint scanner is on the back and it is fast and reliable
  • The textured back of the Redmi 9 feels great in the hand and provides excellent grip
  • Sharp, vibrant, and vivid 6.53-inch full HD+ IPS display - keeping the price-point of the phone in mind, Redmi 9 Prime offers a pretty good display
  • MIUI 11 is as feature rich as ever, the overall interface on the phone is quite smooth and user friendly - Android 10 is running beneath all the jazz
  • Very good performance from the new MediaTek G80 chipset (similar to the Snapdragon 712) - the phone smoothly handles day-to-day task with ease and heavy games like PUBG Mobile run reasonably well
  • Decent quad-camera setup - a 13MP main, an 8MP ultra-wide, a 5MP macro camera, and a 2MP depth sensor
  • The photos from the main camera are good for this budget class
  • The ultra-wide camera is among the better ones at this price and captures more of the scene easily
  • The macro camera puts out decent close-ups if you get the distance right with its fixed focus lens
  • The portraits are detailed, and the blur is convincing thanks to the dedicated depth sensor
  • Decent selfies from the 8MP front camera - portrait mode is available for selfies too, and it is as competent as a single fixed-focus camera can be
  • Excellent battery life with the 5020 mAh cell - with regular use, the Redmi 9 Prime easily lasts through two days of use
  • Redmi 9 Prime is a great option for people looking for a phone with decent gaming performance, good display, and solid battery life at an affordable price
2-minute Review [Negatives]
  • The power button and volumes are quite flush with the frame which means they lack that tactile, clicky feel
  • Design feels a bit dated and underwhelming, there is no spark in Galaxy M21's design as we see in other brand's phones like Xiaomi and Realme
  • However, this is an old chipset and heavy gaming isn't best on this phone - the Redmi Note 9 Pro and the Realme 6 are much better options that will handle gaming better than the Galaxy M21
  • Photos taken in low-light are average - focusing gets worse in low light and the extreme noise-correction makes images look like water paintings
  • Overall, the cameras on the M21 are decent, but there are better cameras available in this price bracket, including the Galaxy M31, which is just a tad bit pricier
  • Samsung Galaxy M11 falls behind in fast charging as competitors are offering close to 30W fast charging, the 15W on M21 feels low
  • Having said that, the Redmi Note 9 Pro and the Realme 6 will still offer you more bang for your buck, overall and when it comes to intensive tasks like gaming, you’ll be better off choosing the Realme 6 or the Redmi Note 8 Pro that are probably the best phones for gaming in this segment
  • The display has average sunlight legibility and you’d have to keep the brightness all the way up for more clarity
  • It packs in plenty of bloatware, so you can get strange notifications and ads, which is annoying
  • Average low-light photos, the camera struggles to get the exposure right
  • Charging is a bit slow - the 10W charger included in the box tops up the Redmi 9 Prime in 2 hours and 48 minutes
Expert Reviews
  1. All the battery life you need
    fonearena.com in-depth Read Review »
  2. Big battery and display at an affordable price
    indiatoday.in in-depth Read Review »
  3. A good option if you are out in the market looking for a capable smartphone that is not Xiaomi or Realme
    business-standard.com in-depth Read Review »
  4. A Phone That Caters Best To Video Content Consumers
    in.mashable.com in-depth Read Review »
  5. Sharp display, good cameras, decent performance and an amazing battery life, though the Galaxy M31 is better
    zeebiz.com in-depth Read Review »
  6. bgr.in in-depth Read Review »
  7. economictimes.indiatimes.com in-depth Read Review »
  8. news18.com in-depth Read Review »
  9. gadgetsnow.com in-depth Read Review »
  10. gsmarena.com hands-on Read Review »
  11. ibtimes.co.in hands-on Read Review »
  1. The Redmi 9 Prime is an excellent budget phone that seems easy to recommend
    gsmarena.com in-depth Read Review »
  2. It's hard to find a better phone at this price point
    phonearena.com in-depth Read Review »
  3. The full-HD+ display and the big battery give this phone an edge over the competition
    gadgets.ndtv.com in-depth Read Review »
  4. Redmi 9 Prime strikes a good balance between style, battery, and performance
    in.mashable.com in-depth Read Review »
  5. Redmi 9 Prime's performance for its price point is very Note-worthy!
    techpp.com in-depth Read Review »
  6. If you are a gamer on a tight budget, Redmi 9 Prime makes for a value for money package
    timesnownews.com in-depth Read Review »
  7. fonearena.com in-depth Read Review »
  8. bgr.in in-depth Read Review »
  9. indianexpress.com in-depth Read Review »
  10. news18.com in-depth Read Review »
  11. themobileindian.com in-depth Read Review »
  12. indiatoday.in in-depth Read Review »
  13. business-standard.com in-depth Read Review »
  14. gadgetsnow.com in-depth Read Review »
User Reviews
  1. Flipkart4.3 140+ reviews »
  1. Flipkart4.3 71+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
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