Our Opinion

The Samsung Galaxy A31 is a significantly better phone than the Samsung Galaxy M30s (4GB RAM, 64GB), and is also slightly better value for money. What should you buy? Go for the Samsung Galaxy A31!

Samsung Galaxy A31  Samsung Galaxy M30s (4GB RAM, 64GB) 
Samsung Galaxy A31 Samsung Galaxy M30s
Buy Now Buy Buy
Excellence Score
38.5
30.7
Value for Money Score
70.1
65.7
Price ₹ 16,999 onwards ₹ 15,290 onwards
Launch Date (India) Jun, 2020 Sep, 2019
Expected Launch Date N/A N/A
Smartphone OS Android 10Expected update to next Android version Android 9.0 Pie, Upgradeable to Android 10Expected update to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.4 inches 6.4 inches
Screen Resolution 1080x2400 pixels (~ 411 pixels per inch) 1080x2340 pixels (~ 403 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes Yes
Display Type AMOLED AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED Super AMOLED
Full Physical QWERTY Keypad
Processor 2 GHz 2.3 GHz
Processor Type Octa Core Octa Core
Processor Name MediaTek Helio P65Ranked #43 in Mobile Processor Benchmarks Samsung Exynos 9611Ranked #38 in Mobile Processor Benchmarks
GPU Mali-G52 Mali-G72 MP3
RAM 6 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 + 5MP 48MP + 8MP + 5MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (Full HD) Yes (4K)
Other Camera Features 48MP: f/2.0 aperture; 1/2.0" Sensor Size; 0.8um Pixel Size; PDAF, 8MP: f/2.2 Aperture; 13mm Focal Length; Ultra-wide Lens; 1/4.0" Sensor Size; 1.12um Pixel Size, 5MP: f/2.4 aperture; Macro Lens, 5MP: f/2.4 aperture; Depth Sensor, Panorama, HDR 48MP: F/2.0 Aperture; Samsung GW2 Sensor, 5MP: Depth Sensor; F/2.2 Aperture, 8MP: 123° Ultra-wide Angle Lens; F/2.2 Aperture
Secondary Camera 20MP 16MP
Secondary Camera Features f/2.2 Aperture F/2.0 Aperture, Samsung SK3P8SP Sensor
Internal Memory 128 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 Yes
Dual SIM GSM+GSM GSM+GSM
Thickness 8.6 mmMedium 8.9 mmMedium
Weight 185 gmMedium 188 gmMedium
Width 73.1 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 Yes, 15W Fast Charging
Included Fast Charger Yes, 15.0W Fast Charger Yes, 15.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features In-display Fingerprint Sensor; Noise Filtration UFS 2.1 Storage; Noise Filtration
2-minute Review [Positives]
  • Decent looks, similar rainbow-like effects at the back as other Galaxy A series phone when caught against the light, and a prism-like pattern that Samsung calls a “3D prism design” - the design is been overused by Samsung
  • While it supports a polycarbonate back, it still manages to look premium
  • Compact and light for the display size and battery capacity, at just 185g, and 8.6mm in thickness
  • Sharp, bright 6.4-inches Super AMOLED panel with a full-HD+ resolution - its vivid colours make it a joy to stream content, while games also look great on the panel because of its high colour accuracy
  • There's Widevine L1 support by default, which makes streaming content in HD possible
  • Comes with Android 10 out of the box - Samsung's One UI 2 is now one of the better, more clean and streamlined Android UIs around, and is well optimised for modern large displays (like this one)
  • Samsung has also added some neat features including a Game Booster and an intuitive gesture-based navigation system
  • Decent quad camera setup at the back - a 48MP primary sensor + 8MP wide-angle camera + 5MP macro camera + 5MP depth sensor
  • Under good light, the Galaxy A31's primary camera manage to capture detailed shots with good dynamic range - images are reasonably sharp, noise is also competently removed, colours are generally nice, and the phone strikes a good balance with saturation
  • The ultra wide-angle cam is decent at capturing more scene in the image (though, the quality is lower than the main camer)
  • Macro camera turns out quite good close ups - you can get a lot closer to your subject when using the macro camera and the sensor picks up a fair bit of detail
  • Very good portrait mode ("Live focus") - image quality is good and the depth camera helps the Galaxy A51 do a decent job of edge detection
  • Photos from the 20MP front camera looks very impressive - selfies have plenty of detail and look really sharp, colors are pleasing, the dynamic range is impressive for a selfie camera - Selfie portraits are a thing on the A31 and surprisingly impressive - subject separation with a single camera is hard to pull off, and Samsung has done a great job of it
  • Decent bottom-firing speaker - sufficient for personal listening
  • Good battery life from the 5000 mah battery - easily able to go well beyond a day on a single charge
  • Reasonable 15W fast charging - charges 67 percent in an hour (though, not as quick as others in this segment such as the Redmi K20 Pro)
  • Decent looks and build quality - with a a unibody polycarbonate design, and glossy finish on the back panel - quite similar to the M30 - the only major visual difference is that the triple camera setup gets a wider, rectangular module to house the LED flash and "48 megapixel" branding
  • The plastic body keeps the phone feeling relatively lightweight at 188 grams, which is mighty impressive for a phone packing a big 6000mAh 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+ (2340x1080) Super AMOLED Infinity-U 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 optimized for large displays like this
  • One UI also brings in other useful stuff, like a System-wide Night mode (which turns the background completely black, and looks great on the M30s' AMOLED display), and Always On Display option
  • Good, strong performance with the Exynos 9611 at the core (similar to Snapdragon 665) - everyday performance to high-end gaming - everything is handled smoothly
  • Decent rear camera setup - 48MP main sensor + 8MP wide-angle lens + 5MP depth sensor
  • With the primary lens, you get bright and attractive photos in daylight conditions with vibrant colours and good contrast - dynamic range is also wide and noise is controlled
  • Switching to the wide-angle lens will offer a new perspective, letting you click a wider area at close range to the subject (it is best used in daylight, however, as wide-angle captures look grainy and noise indoors or in low light)
  • The dedicated Night mode can be used with the main camera - it comes in handy in low-light conditions, extending the shutter time to allow more light into the frame - making for some decent low-light photos
  • Live Focus does a decent job at separating the subject from the background, and giving good bokeh shots
  • The 16MP selfie camera too does a decent job when it comes to capturing selfies outdoors under bright light (though it starts to struggle indoors and in low light, offering softer selfies with a lot of grain)
  • Overall, the cameras on the M30s are decent for the price bracket, even though they are not the best (that title is shared by Xiaomi and Realme phones)
  • 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
  • With the M-series performing well for Samsung, M30s is well-set to add to that success, delivering a good all-round package with one key differentiator - an incredible battery life - if that is one of your primary concerns in a phone, then the M30s is a no-brainer (if on the other hand you want the best camera or best performance for your buck, you can look at Xiaomi or Realme phones in this price bracket)
2-minute Review [Negatives]
  • The front has some thick bezels for the price
  • The in-display fingerprint sensor, as well as the facial recognition, are on the slower side
  • The glossy body is prone to picking up fingerprints
  • There's still some bloatware pre-installed, including third-party apps and some of Samsung's own apps such as Samsung Shop (though most of them can be uninstalled)
  • Average performance from the MediaTek Helio P65 - it feels a bit sluggish overall, there's a persistent hint of stutter in the animations, and lag when switching between apps
  • No video stabilisation - video results are just average
  • Low light photos out of the Galaxy A31 aren't great - the main camera's output is soft and noisy, while the colors are relatively desaturated
  • Overall, while the Galaxy A51 offers good cameras, there are certainly better options available, such as the Redmi K20 Pro
  • The Galaxy A31 has hardly anything going for it - the middling SoC performance and underwhelming cameras do nothing to help, there are better options available from Xiaomi and Realme
  • The power button and volumes are quite flush with the frame which means they lack that tactile, clicky feel
  • Lacks the premium finish of some of its competitors
  • Focusing is slow at times
  • Overall low light camera performance still feels lacking
Expert Reviews
  1. The A31 can stand on its own as a decent mid-ranger... but the competition is just brutal
    gsmarena.com in-depth Read Review »
  2. The middling SoC performance and underwhelming cameras are faults that are too glaring to ignore
    gadgets.ndtv.com in-depth Read Review »
  3. The Samsung Galaxy A31 is a decent smartphone... but it is facing competition in-house only, its M-series sibling the Galaxy M31 is a better and much affordable option
    gadgetsnow.com in-depth Read Review »
  4. An A-lister you should probably ignore
    neowin.net in-depth Read Review »
  1. It's one of the easiest recommendations to make from Samsung's low- to mid-range portfolio
    gsmarena.com in-depth Read Review »
  2. Redmi and Realme phones are still better all-rounders than the M30s, but if your use case calls for extreme battery backups, play a lot of games or are brand conscious, the M30s might be well-suited for you
    techradar.com in-depth Read Review »
  3. If battery life ranks very high on your priority list, then you should consider the Galaxy M30s
    gadgets.ndtv.com in-depth Read Review »
  4. Overall, the Galaxy M30s is good choice at competitive price
    fonearena.com in-depth Read Review »
  5. Decent package
    bgr.in in-depth Read Review »
  6. Doesn’t do enough to be a stand-out recommendation
    androidauthority.com in-depth Read Review »
  7. A flawless device, especially considering how affordable it is
    indianexpress.com in-depth Read Review »
  8. Looks impressive...will act as a real threat to existing devices in the same price segment from the likes of Xiaomi and Realme
    economictimes.indiatimes.com in-depth Read Review »
  9. Specifically recommended for people who don't’ want to lug a power bank all the time....For them, the Galaxy M30s is definitely worth considering
    thequint.com in-depth Read Review »
  10. If you are looking for a smartphone that offers long battery life and good display, consider the M30s
    themobileindian.com in-depth Read Review »
  11. The Galaxy M30s is okay
    timesnownews.com in-depth Read Review »
  12. Samsung Galaxy M30s has fantastic battery life, good cameras and a bright AMOLED display.. while it has some issues, it is still recommended if you have a budget of around Rs 15,000
    notebookcheck.net in-depth Read Review »
  13. A good option to buy in the price range
    financialexpress.com in-depth Read Review »
  14. Checks almost all checkboxes for the perfect mid-range device
    deccanchronicle.com in-depth Read Review »
  15. The Galaxy M30s is an ideal phone if you want a device that can handle excruciating hours of streaming, gaming and camera use, apart from the usual social media use
    business-standard.com in-depth Read Review »
  16. At this price point, the Galaxy M30s is a great choice for anyone looking for a smartphone with a long-lasting battery
    indiatoday.in in-depth Read Review »
  17. If you are one of those who don't like to use a portable charger or frequently forget to charge your device, then this smartphone is no less than a gift
    zeebiz.com in-depth Read Review »
  18. techpp.com hands-on Read Review »
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Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
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