Our Opinion

The Samsung Galaxy M31 (8GB RAM, 128GB) is a significantly better phone than the Oppo A9 (8GB RAM, 2020), and is also significantly better value for money. What should you buy? Go for the Samsung Galaxy M31 (8GB RAM, 128GB)!

Oppo A9 (8GB RAM, 2020)  Samsung Galaxy M31 (8GB RAM, 128GB) 
Oppo A9 2020 Samsung Galaxy M31
Buy Now Buy Buy
Excellence Score
30.6
46.4
Value for Money Score
66.1
71.4
Price ₹ 14,990 onwards ₹ 18,499 onwards
Launch Date (India) Sep, 2019 May, 2020
Expected Launch Date N/A N/A
Smartphone OS Android 9.0 Pie, Upgradeable to Android 10Low likelihood of getting updated to next Android version Android 10Expected update to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.5 inches 6.4 inches
Screen Resolution 720x1600 pixels (~ 270 pixels per inch) 1080x2340 pixels (~ 403 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 IPS LCD AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features N/A Super AMOLED
Full Physical QWERTY Keypad
Processor 2 GHz 2.3 GHz
Processor Type Octa Core Octa Core
Processor Name Qualcomm Snapdragon 665Ranked #45 in Mobile Processor Benchmarks Samsung Exynos 9611Ranked #37 in Mobile Processor Benchmarks
GPU Adreno 610 Mali-G72 MP3
RAM 8 GB 8 GB
3G Yes Yes
4G Yes Yes
5G
VoLTE Yes Yes
WiFi Yes Yes
VoWiFi/WiFi-Calling Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port microUSB USB-C
Primary Camera 48MP + 8MP + 2MP + 2MP 64MP + 8MP + 5MP + 5MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (4K)
Other Camera Features 48MP: 1/2.25" Sensor Size; 0.8um Pixel Size; F/1.8 Aperture; EIS, 8MP: 119° Ultra-wide lens; F/2.25 Aperture; 1.12um Pixel Size, 2MP: Mono-chrome Sensor; F/2.4 Aperture; 1.75um Pixel Size, 2MP: Macro Lens; F/2.4 Aperture, 1.75um Pixel Size 64MP: f/1.8 aperture; 26mm Focal Length; 1/1.72" 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; 25mm Focal Length; Macro Lens; 1/5.0" Sensor Size; 1.12um Pixel Size, 5MP: f/2.2 aperture; Depth Sensor, Panorama, HDR, Video: [email protected]; [email protected]; EIS
Secondary Camera 16MP 32MP
Secondary Camera Features F/2.0 Aperture, 1/3.1" Sensor Size, 1.0um Pixel Size, HDR, Beautification, Filters f/2.0 aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR
Internal Memory 128 GB 128 GB
Expandable Memory Slot Yes, up to 256 GB Yes, up to 512 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes Yes (Wireless)
Dual SIM GSM+GSM GSM+GSM
Thickness 9.1 mmThick 8.9 mmMedium
Weight 195 gmHeavy 191 gmHeavy
Width 75.6 mmOk for one-handed use 75.1 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 5000 mAh 6000 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
Included Fast Charger Yes, 15.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features Stereo Speakers; Noise Filtration; Dolby Atmos UFS 2.1 Storage; FM Recording; Noise Filtration
2-minute Review [Positives]
  • Stylish, impressive dual-color 3D gradient design, and good built quality
  • The curved back panel gradually meets the side to provide an easy-to-hold experience
  • Decent, large 6.5-inch IPS LCD screen with HD+ (720×1600 pixels) resolution, an 82.5 percent screen-to-body ratio, and a water-drop notch
  • Decent color reproduction and brightness
  • Widevine L1 certification for HD video playback on Netflix and Amazon Prime Video
  • ColorOS is a fairly refined, sophisticated custom Android skin, with a number of useful add-on features
  • Solid performance with a Snapdragon 665 powering the internals - both day-to-day stuff, and gaming is smooth
  • Decent overall camera performance for the price bracket
  • The device comes with a quad-camera setup - a 48-megapixel primary sensor + 8-megapixel ultra-wide lens + two 2MP cameras for "artistic portrait effects"
  • You get good results in ideal lighting conditions across the board - the 48-megapixel primary sensor captures good images with decent texture, colors, and detail - the camera can capture impressive images in an ideal or sometimes challenging situation with good amount of dynamic range
  • The camera manages to take okay images in low light, but things improve dramatically with the dedicated “Night” mode
  • With the portrait mode, the A9 2020 does a decent job in background separation (though the 2 additional cameras for "artistic portrait effects" don't seem to add much value)
  • Decent 16-megapixel front camera sensor for selfies
  • Offers a good stereo audio effect with its bottom and top firing speakers
  • Very good battery life with a large 5000mAh battery - you will comfortably get 2 days of use
  • Support for reverse charging - you can use the device as a power bank to charge another smartphone
  • Decent looks and build quality - very similar to the Samsung Galaxy M30s, with a a unibody polycarbonate design, and glossy finish on the back panel - the only major difference is the camera module which now packs a fourth camera
  • The plastic body keeps the phone feeling relatively lightweight at 191 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
  • 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 M30s' 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
  • Good quad rear camera setup - 64MP main sensor + 8MP wide-angle lens + 5MP depth sensor
  • Shots taken with the primary camera during daylight are quite satisfactory, images are detailed, especially the 64MP shots, and they showcase good dynamic range
  • 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)
  • Photos taken in low-light looks good - switching to Night mode helps reduce grain in the output and further improves image quality
  • Live Focus shots are quite impeccable 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 M31 does a good job of separating the subject from the background
  • The macro camera takes decent shots outdoors (though, the quality dips when indoors and the output is restricted to 5MP in resolution)
  • The 32MP selfie camera is quite good and takes detailed selfies (though, in low light, the quality goes down a notch and results are grainy)
  • Overall, the cameras on the M30s are good for the price bracket, even though they are not the best (that title crowned to the POCO X2)
  • Monster 6000mAh 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
  • Samsung has seen success with the Galaxy M30s, so it didn't want to fix what isn't broken, they upgraded the RAM, put in a fourth rear camera, and preloaded Android 10 - if you don't care for benchmark scores and just want a device that covers the basics and has great AMOLED display, has great battery backup and has a versatile set of cameras, the Galaxy M31 will do just fine
2-minute Review [Negatives]
  • A bit bulky
  • Like all glossy rear panels, the rear does easily attract fingerprints and smudges
  • The panel is quite glossy so you may find it difficult to read content under direct sunlight
  • Like most custom Android skins, it's not quite as simple, and clutter-free as stock Android
  • It's definitely not category-leading performance though, many competitors provide faster processors
  • Overall, while the camera setup is good for the price bracket, again it's not category leading
  • No fast charging support (the included 10W charger inside the box with charges the device from 0 to 100 percent in about 2 hours and 25 minutes)
  • On it's own the Oppo A9 2020 is a pretty decent mid-range phone with 2 key highlights - a stylish design and a very good battery life - but its cameras and performance are nothing special, which puts it behind a lot of the competition in this hotly contested price category
  • 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 M31'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 8 Pro, the POCO X2 and the Realme XT are much better options that will handle gaming better than the Galaxy M31
  • Samsung Galaxy M31 falls behind in fast charging as competitors are offering close to 30W fast charging, the 15W on M31 feels low
  • Having said that, the Redmi Note 8 Pro and the Realme X2 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 POCO X2 or the Redmi Note 8 Pro that are probably the best phones for gaming in this segment
Expert Reviews
  1. One of the best affordable phones for those who stream a lot of video, and a still great option for almost everyone else on a limited budget
    techradar.com in-depth Read Review »
  2. Has a few good features to offer...but overall, it is outclassed by rivals like the Realme X
    gadgets.ndtv.com in-depth Read Review »
  3. Fighting the competition in style...but the competition might give you better value for your hard earned cash
    bgr.in in-depth Read Review »
  4. A decent smartphone...but given the better value for money competition from likes of Redmi Note 8 Pro, Realme 5 Pro, Vivo Z1X, and Moto G8 Plus, the Oppo A90 2020 might find it difficult to stay in the race
    indianexpress.com in-depth Read Review »
  5. Proof that you don’t need to pay a fortune for flagship features...highly recommended
    techadvisor.co.uk in-depth Read Review »
  6. Without any standout feature, we are afraid Oppo A9 2020 may find it difficult to carve a space for itself in the India smartphone market
    gadgetsnow.com in-depth Read Review »
  7. Ideal choice for those looking for good camera and premium looks
    thenewsminute.com in-depth Read Review »
  8. We expected more...would have a tough time competing with its rivals in the price segment
    business-standard.com in-depth Read Review »
  9. zdnet.com hands-on Read Review »
  1. If you don't care for benchmark scores and just want a device that covers the basics and has a great battery, the Galaxy M31 will do just fine... though, not the best bang for the buck
    gadgets.ndtv.com in-depth Read Review »
  2. Improved cameras, more RAM and the battery is just as reliable as before
    bgr.in in-depth Read Review »
  3. The combination of simple looks, lightweight design, capable quad cameras and perhaps above all the insanely long battery life makes the Galaxy 31 worth the money
    indianexpress.com in-depth Read Review »
  4. If you are looking for a smartphone that gives you long-lasting battery life, then Galaxy M31 is meant for you... not for power users though
    themobileindian.com in-depth Read Review »
  5. Unbelievably compact for a smartphone that packs a massive 6000 mAh battery
    zeebiz.com in-depth Read Review »
  6. Massive 6000mAh battery, upgraded camera
    thenewsminute.com in-depth Read Review »
  7. Perfect fit for the folks who aren't into gaming
    firstpost.com in-depth Read Review »
  8. You can go for Galaxy M31 if you want a reliable battery, an immersive display and camera-centric features packed in a handset... but it's no powerhouse
    timesnownews.com in-depth Read Review »
  9. Despite being good enough for now, the Galaxy M31 just doesn’t enthuse the kind of confidence that would see it being considered in the same breath as more powerful devices from Redmi and Realme
    indiatoday.in in-depth Read Review »
  10. The Samsung Galaxy M31 is a reliable smartphone that makes use of a great AMOLED display, has great battery backup and has a versatile set of cameras... but you’ll be better off choosing the POCO X2 or the Redmi Note 8 Pro if you like gaming
    in.mashable.com in-depth Read Review »
  11. expertreviews.co.uk in-depth Read Review »
  12. gsmarena.com hands-on Read Review »
  13. fonearena.com hands-on Read Review »
  14. ibtimes.co.in hands-on Read Review »
  15. techpp.com hands-on Read Review »
User Reviews
  1. Flipkart4.3 3,365+ reviews »
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Individual Review 2
  • Individual Review 2
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