Our Opinion

The Samsung Galaxy M31 (6GB RAM, 128GB) is a significantly better phone than the Vivo S1 Pro, and is also significantly better value for money. What should you buy? Go for the Samsung Galaxy M31 (6GB RAM, 128GB)!

Samsung Galaxy M31 (6GB RAM, 128GB)  Vivo S1 Pro 
Samsung Galaxy M31 Vivo S1 Pro
Buy Now Buy Buy
Excellence Score
46.3
38.0
Value for Money Score
73.5
67.1
Price ₹ 17,499 onwards ₹ 18,650 onwards
Launch Date (India) Mar, 2020 Jan, 2020
Expected Launch Date N/A N/A
Smartphone OS Android 10Expected update to next Android version Android 9.0 PieExpected update to next Android version
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.4 inches 6.38 inches
Screen Resolution 1080x2340 pixels (~ 403 pixels per inch) 1080x2340 pixels (~ 404 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 3 Yes
Display Type AMOLED AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED Super AMOLED, 2.5D Curved Glass
Full Physical QWERTY Keypad
Processor 2.3 GHz 2 GHz
Processor Type Octa Core Octa Core
Processor Name Samsung Exynos 9611Ranked #36 in Mobile Processor Benchmarks Qualcomm Snapdragon 665Ranked #44 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Adreno 610
RAM 6 GB 8 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 64MP + 8MP + 5MP + 5MP 48MP + 8MP + 2MP + 2MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (Full HD)
Other Camera Features 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: 2160p@30fps; 1080p@30fps; EIS 48MP: F/1.8 Aperture; 1/2" Sensor Size; 0.8um Pixel Size; PDAF, 8MP: F/2.2 Aperture; 13mm Focal Length (Ultra-wide); 1/4" Sensor Size; 1.12um Pixel Size, 2MP: F/2.4 Aperture; 1/5" Sensor Size; 1.75um Pixel Size (Macro camera), 2MP: F/2.4 Aperture; Depth Sensor, HDR, Panorama, AI Portrait Lighting, AI Super Wide Angle, Bokeh and Shot Re-Focus, Super Macro, Super Night Mode, Live Photo, AR Stickers, AI Portrait Framing, AI Scene Identification, Ultra Wide Video, Slo-Mo, Time Lapse
Secondary Camera 32MP 32MP
Secondary Camera Features f/2.0 aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR F/2.0 Aperture, 0.8um Pixel Size, HDR, AI Face Beauty, Filters, AI Portrait Lighting, Group Selfie (Panorama), Super Night Selfie, Live Photo, AR Stickers, Watermark, Mirror Selfie
Internal Memory 128 GB 128 GB
Expandable Memory Slot Yes, up to 512 GB Yes, up to 256 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes (Wireless) Yes
Dual SIM GSM+GSM GSM+GSM (Hybrid SIM slot)
Thickness 8.9 mmMedium 8.7 mmMedium
Weight 191 gmHeavy 187 gmMedium
Width 75.1 mmOk for one-handed use 75.2 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 6000 mAh 4500 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 Dual-Engine Fast Charging
Included Fast Charger Yes, 15.0W Fast Charger Yes, 18.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features UFS 2.1 Storage; FM Recording; Noise Filtration In-display Fingerprint Sensor; Noise Filtration
2-minute Review [Positives]
  • 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
  • Jazzy, eye-catching back panel design with gradient finish and the unique diamond-shaped camera module
  • The slim profile of the camera module barely protrudes from the back
  • The in-display fingerprint sensor works well
  • Face unlock is present too, which is reliable (though, not as quick as on the other phones at this price level)
  • Vivid, crisp 6.38-inch full-HD+ Super AMOLED display - the colours are also very punchy thanks to the AMOLED panel, and text and icons are adequately sharp
  • The display gets very bright, making it easily legible even under direct sunlight
  • Widevine L1 DRM certified - you can watch Netflix and Prime in crisp HD resolution
  • Funtouch OS based on Android 9 Pie looks very similar to iOS, and is pretty feature packed
  • Decent performance powered by the Qualcomm Snapdragon 665 - it handles multitasking well and regular usage is smooth
  • Decent set of quad rear cameras - 48MP primary + 8MP ultra-wide + 2MP macro + 2MP depth camera
  • Close-ups are good, with good bokeh and details in objects
  • In bokeh mode, the Vivo S1 Pro's depth camera does a decent job of detecting edges, and blurs out the right areas - colours and details are also good
  • The macro camera is also handy at times, and lets you get very close to the subjects
  • Very good 32MP selfie camera - it captures detailed photos when shooting under ideal light - results are fairly good even when shooting against the light
  • The Vivo S1 Pro packs in a 4500 mAh battery, which easily lasts for 2 days of moderate use
  • Overall, the Vivo S1 Pro is a decent pick if all you want is a stylish design, good battery life, and a punchy display
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 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
  • The Vivo S1 Pro feels a little chunky at 8.68mm thick
  • The back isn't glass, as Vivo still uses laminated plastic
  • Having said that, the interface is unnecessarily complicated - swipe-up gesture to access system shortcuts is confusing, since it's in the notification shade in stock or other Android UIs
  • There's a lot of bloatware preinstalled on the Vivo S1 Pro (though the third-party apps can be removed)
  • Heavy games such as PUBG Mobile however struggle to run at a smooth frame rate even at the Low graphics preset
  • This isn't a bad processor, but it's typically now found in phones closer to the Rs. 10, 000 mark, such as the Realme 5i
  • In daylight, the primary camera manage to capture average-looking landscape shots - images lack depth, objects at the sides of the frame also have a bit of grain - HDR kicks in when needed, but the end result isn't always very good - some images have a very cool, bluish hue to them, which look unnatural
  • The wide-angle camera offered a nice perspective, but colours weren't very accurate
  • Low-light photos are just strictly average - focusing is a lot slower in the dark, and it takes a second or two longer to save each photo - there's no dedicated night shooting mode either
  • No option for a background bokeh effect with the front camera
  • Videos can only be recorded at up to 1080p, which is not great, especially at this price - there's no stabilisation either, which is a big letdown
  • Low-light video is not very good, from both primary & ultra-wide lens - has lots of grain as well as weak details
  • Overall, rear cameras are nothing special - you will get better outcomes with the Realme X2 or the Redmi K20
  • The single speaker doesn't get too loud and the sound is a little tinny
  • Vivo uses its Dual Engine Fast Charge feature, but the 18W charger isn't the fastest - charging the phone completely takes about two and a half hours
  • If you'd prefer a more well-rounded phone though, we suggest looking at offerings from Realme and Xiaomi instead, such as the Realme X2 and the Redmi K20, which have much more powerful SoCs
Expert Reviews
  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 »
  1. Not a bad pick if all you want is a stylish design, good battery life, and a punchy display....If you'd prefer a more well-rounded phone though, we suggest looking at offerings from Realme and Xiaomi instead
    gadgets.ndtv.com in-depth Read Review »
User Reviews
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Unofficial specs? N/A N/A
Individual Review 2
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