Our Opinion

The Samsung Galaxy M31 (8GB RAM, 128GB) is a significantly better phone than the Samsung Galaxy A9 (6GB RAM, 2018), and is also significantly better value for money. What should you buy? Go for the Samsung Galaxy M31 (8GB RAM, 128GB)!

Samsung Galaxy A9 (6GB RAM, 2018)  Samsung Galaxy M31 (8GB RAM, 128GB) 
Samsung Galaxy A9 Samsung Galaxy M31
Buy Now Buy Buy
Excellence Score
26.9
42.8
Value for Money Score
48.2
69.7
Price ₹ 23,490 onwards ₹ 18,499 onwards
Launch Date (India) Nov, 2018 May, 2020
Expected Launch Date N/A N/A
Smartphone OS Android 8.0 Oreo, 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 6.3 inches 6.4 inches
Screen Resolution 1080x2220 pixels (~ 392 pixels per inch) 1080x2340 pixels (~ 403 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Gorilla Glass 6 Yes, Corning Gorilla Glass 3
Display Type AMOLED AMOLED
Screen Refresh Rate 60 HzStandard 60 HzStandard
Display Features Super AMOLED, Infinity Display Super AMOLED
Full Physical QWERTY Keypad
Processor 2.2 GHz 2.3 GHz
Processor Type Octa Core Octa Core
Processor Name Qualcomm Snapdragon 660Ranked #48 in Mobile Processor Benchmarks Samsung Exynos 9611Ranked #38 in Mobile Processor Benchmarks
GPU Adreno 512 Mali-G72 MP3
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 24MP + 10MP + 8MP + 5MP 64MP + 8MP + 5MP + 5MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (4K)
Other Camera Features 24MP: F/1.7 Aperture; PDAF, 8MP: F/2.4 Aperture; 12mm Focal Length (ultrawide), 10MP: F/2.4 Aperture; (telephoto); 2x Optical Zoom, 5MP: F/2.2 Aperture; Depth Sensor, Panorama, HDR 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 24MP 32MP
Secondary Camera Features F/2.0 Aperture, HDR 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 512 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 7.8 mmMedium 8.9 mmMedium
Weight 183 gmMedium 191 gmHeavy
Width 77.0 mmInconvenient for one-handed use 75.1 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 3800 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) 23.00 hrs N/A
Fast Charging Support Yes Yes, 15W Fast Charging
Included Fast Charger Yes Yes, 15.0W Fast Charger
Other Battery Parameters Internet Usage Time (3G): upto 13 hrs, Internet Usage Time (4G): upto 15 hrs, Internet Usage Time (3G): upto 15 hrs, Video Playback Time: upto 19 hrs, Audio Playback Time: upto 59 hrs, Audio Playback Time (Always-On-Display Off): upto 112 hrs N/A
Fingerprint sensor Yes Yes
Other Features NFC; ANT+ Support; Noise Filtration UFS 2.1 Storage; FM Recording; Noise Filtration
2-minute Review [Positives]
  • Attractive taffy-inspired colors, and a premium glass design
  • Immaculate 6.3inch FullHD+ Super AMOLED display - it is super bright, very rich when it comes to colors, vibrant, and has a good contrast -Colors, whether natural or artificially enhanced, pop out – thus, laying out a dramatic and vivid picture - watching videos, reading text - everything is a pleasant experience
  • The display, being an AMOLED, also supports 'always-on' feature
  • Overall, this is one of the best displays you will get on a smartphone under Rs. 40k
  • Samsung Experience UI is a decent, polished Android UI
  • Solid mid-range performance with the Snapdragon 660 - which means that everything except high-end games runs butter smooth
  • This is the world's first mainstream phone to pack 4 cameras on the rear - the quad camera comprises a 24-megapixel primary sensor with f/1.7 sensor aimed at providing ample muscle power for night light shots, a 10-megapixel telephoto sensor for 2x zoom, an 8-megapixel ultra-wide sensor for a 120-degree field of view, and lastly a 5-megapixel sensor for sensing depth to render images with bokeh effects
  • Out of these, the wide-angle sensor is actually pretty good - and is a useful power tool to have to capture wide shots
  • The included set of in-ear style earphones are pretty good in terms of clarity and a good amount of isolation
  • The Galaxy A9’s solo speaker too seems very powerful and punchy (although there is not much bass)
  • Dolby Sound support
  • Very good battery life with a 3800mAh battery - will comfortably last the day even with heavy use
  • Fast charging support - takes 1 hour 25 minutes to go from 10% battery to 100% battery - it's not mind blowing, but it's good
  • 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, a 8MP wide-angle lens, a 5MP depth sensor and a 5MP macro camera
  • 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]
  • Feel slightly hefty and using it would be a two-hand affair if you have small or medium-sized hands
  • The left side features a dedicated button for Bixby (Samsung's AI assistant), which still has a very limited use case
  • The fingerprint scanner on the back feels cramped and is not fast at all - further, the slow wake up animation don't åhelp the cause
  • The Face unlocking, too, misses the mark here with very slow performance and high dependency on a bright light source.
  • Like most custom UIs though, it has plenty of bloatware, and is not as simple and minimalistic as a stock Android interface
  • The issue though is that, at this price, other competitors come with flagship chipsets (Snapdragon 845) that leave the Galaxy A9 far behind - the Snapdragon 660 is now a more mid-range chipset, available at as low as Rs. 15k price ranges
  • You will see the difference mostly in games like PUBG Mobile, Asphalt 9, and Mortal Kombat X
  • Overall though, the cameras are a complete let-down especially given all the hype - they are just ok - and you can certainly get better camera performance in this price bracket
  • Generally, the cameras tend to fall flat in terms of details, especially when the object is too close or too far
  • When there’s low light, the smartphone again struggles to capture details, especially when the object is moving, the saturation is overblown, and the smartphone often fails at retaining ample light in the image
  • Portrait mode shots are also not very impressive - edge detection is not the best in class
  • The front camera is average too
  • In the portrait mode on the front camera, the phone can struggle to detect edges cleanly - and there is an over-smoothening of images
  • Video recording is average too, and EIS only works upto Full HD resolution
  • If you are a multimedia/video centric consumer and a loyal Samsung fan, you may want to consider the Galaxy A9 (2018) because of it's good display and audio chops - but for all other users, you will find much better value elsewhere - in phones like the OnePlus 6T (much better performance, better cameras, stock-like Android), or the Pixel 2/XL (again better performance, much better cameras, and stock Android) - you can also look at much cheaper phones like the Poco F1 and get much better value
  • 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. If you are after taking nice pictures with your phone regardless of the number of cameras it has - well, there are better options out there
    gsmarena.com in-depth Read Review »
  2. Seriously, Samsung? Seriously?! Is this really the best you can come up to rival OnePlus, Pocophone, Honor and all the rest?
    phonearena.com in-depth Read Review »
  3. Does not live up to the hype
    beebom.com in-depth Read Review »
  4. Samsung is trying to take on the OnePlus 6T, and that doesn't quite work out in its favour
    gadgets.ndtv.com in-depth Read Review »
  5. This might not be a heavily spec’d smartphone to beat the competition, but the four cameras and a great design still make it a worthy contender
    bgr.in in-depth Read Review »
  6. If you are thinking of buying the Samsung Galaxy A9 purely for photography purposes, caught up by the hype, we would suggest holding off
    news18.com in-depth Read Review »
  7. A good attempt by Samsung to bring some new flavour to its mid-range line
    indiatoday.in in-depth Read Review »
  8. stuff.tv in-depth Read Review »
  9. techradar.com hands-on Read Review »
  10. digitaltrends.com hands-on Read Review »
  11. trustedreviews.com hands-on Read Review »
  12. hindustantimes.com hands-on Read Review »
  13. alphr.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. Flipkart4.4 68+ reviews »
  2. Amazon3.8 232+ reviews »
  1. Flipkart4.2 20+ reviews »
  2. Amazon4.2 80,568+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
Individual Review

Are 4 Rear Cameras Worth It? Samsung Galaxy A9 2018 Revi...

C4ETech

Top Pick

Individual Review

Samsung Galaxy M31 Review with Pros & Cons...

Geekyranjit

Top Pick

Full Review

Are 4 Rear Cameras Worth It? Samsung Galaxy A9 2018 Review

C4ETech

Full Review

Samsung Galaxy M31 Review with Pros & Cons

Geekyranjit

Did you find phonecurry useful in your phone search? Drop us a testimonial, or Tell us how we can improve