Asus Zenfone 5Z (8GB RAM, 256GB)  Samsung Galaxy M31 (8GB RAM, 128GB) 
Asus Zenfone 5Z Samsung Galaxy M31
Buy Now N/A Buy
Excellence Score
N/A
42.8
Value for Money Score
N/A
69.7
Price N/A ₹ 18,499 onwards
Launch Date (India) Jul, 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 6.2 inches 6.4 inches
Screen Resolution 1080x2246 pixels (~ 402 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 Super IPS+, Bluelight filter, Smart Screen On Super AMOLED
Full Physical QWERTY Keypad
Processor 2.7 GHz 2.3 GHz
Processor Type Octa Core Octa Core
Processor Name Qualcomm Snapdragon 845Ranked #15 in Mobile Processor Benchmarks Samsung Exynos 9611Ranked #38 in Mobile Processor Benchmarks
GPU Adreno 630 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 USB-C USB-C
Primary Camera 12MP + 8MP 64MP + 8MP + 5MP + 5MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (4K) Yes (4K)
Other Camera Features 12MP: F/1.8 Aperture; 24mm Focal Length; 1/2.55" Sensor Size; 1.4µm Pixel Size, 8MP: F/2.0 Aperture; 12mm Focal Length; 1/4" Sensor Size; 1.12µm Pixel Size, Phase Detection Autofocus (PDAF), Electronic Image Stabilisation (EIS) 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 8.0MP 32MP
Secondary Camera Features F/2.0 Aperture, 24mm Focal Length, 1/4" Sensor Size, 1.12µm Pixel Size, Electronic Image Stabilisation (EIS), Full HD Video Rec. f/2.0 aperture, 26mm Focal Length, 1/2.8" Sensor Size, 0.8um Pixel Size, HDR
Internal Memory 256 GB 128 GB
Expandable Memory Slot Yes, up to 2 TB 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 (Hybrid SIM slot) GSM+GSM
Thickness 7.7 mmMedium 8.9 mmMedium
Weight 165 gmMedium 191 gmHeavy
Width 75.7 mmOk for one-handed use 75.1 mmOk for one-handed use
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 3300 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 Yes, 15W Fast Charging
Included Fast Charger Yes, 18.0W Fast Charger Yes, 15.0W Fast Charger
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features NFC; Stereo Speakers; Noise Filtration; DTS Headphone X; Hi-Res Audio; Google Drive: 100GB free space (1 year) UFS 2.1 Storage; FM Recording; Noise Filtration
2-minute Review [Positives]
  • Beautiful, elegant, glass & metal design, with a 'notch' screen - quite similar to the iPhone X - and arguably the most beautifully designed phone in this price bracket
  • The power button and the volume rocker on the right have just the right amount of tactile give, and also the mid-frame has a smooth matte finish that ups both the premium quotient as well as the in-hand feel - the ZenFone 5Z feels like an expensive phone that isn't expensive at all
  • Build quality is rock solid too - the phone has considerable heft but not unbearably so - you'll feel the phone in your hands but you won't find it taking the better of you - it's just the right proportion
  • It's very pocketable too - boasting of an impressive screen-to-body ratio of 90 per cent - the phone is almost border-less, barring a notch up-top and a chin portion at the bottom
  • The tall, modern, 19:9 display is absolutely gorgeous - it can get really bright and produces rich and vibrant colours that look pleasing to the eyes - it has great viewing angles as well - again, this is arguably the best display in this price bracket, even better than the OnePlus 6, especially in terms of colour accuracy
  • Asus's ZenUI is a huge improvement over its previous, bloated versions - it's now much lighter and smoother, and adds tons of useful AI frameworks to make the core Android experience much better - the cameras use AI for scene detection and better shots, the battery uses AI to optimize charging, the processor uses AI to boost specific apps/games, and the display uses AI to remain on when you are looking at it!
  • Asus also makes probably the best use of the 'bunny ears' on the sides of the notch of any Android phone so far - the implementation is well thought-out - the bunny ears in the case of the ZenFone 5Z are interactive - they don't bombard you with icons and notifications - instead, everything is neatly arranged and there's even a tap to view more option - tapping on either side of the notch takes you to a small sub-head that gives you an expanded view of all the incoming notifications, without having you to pull them down all the way through - it's these little details in the software that really add to the experience of using the Zenfone 5Z
  • The hardware on the Zenfone 5Z is as top-end as it gets - it is the cheapest phone in India right now with a Qualcomm Snapdragon 845 processor under the hood - in short, it will fly through anything you throw at it - and will be as fast as other flagships (OnePlus, Galaxy S9 etc)
  • Very good dual camera system at the rear - arguably the best at this price point, competing virtually head-to-head with the OnePlus 6, and and not too much behind the best of the best like the Pixel 2 - photos clicked with it in good lighting come out well, with lots of detail and colours which are mostly true to source - dynamic range is also spot-on - the ZenFone 5Z is also capable of taking some good shots in tricky and low light conditions - the phone also comes with an in-built night mode that ups the detail (even further) and leads to brighter photos at the cost of resolution (4-megapixel)
  • Thanks to the 4-axis OIS, shake is minimal (or altogether absent) in videos and the 4K clips shot with the phone also look fantastic - the phone further comes with a 3 mic system that results in fairly crisp audio recording as well
  • The secondary 8-megapixel wide-angle sensor on the rear performs its job really well too - it gives you both a pretty amazing portrait mode, and a wide-angle shot option
  • The phone's front 8MP shooter is decent too (though not exceptional like the rear camera setup) - it takes some good selfies in good light
  • The stereo speakers can get really loud, and the phone also supports High-Resolution audio via compatible wired and wireless headphones
  • Good battery life - the 3300mAh battery inside the ZenFone 5Z is similar to the OnePlus 6 - you will comfortably get a day of use
  • It even charges as fast as OnePlus' excellent Dash charger - you can top it off in some one hour fifteen minutes using the bundled 18W Qualcomm Quick Charger 3.0 charger
  • On the whole, the Asus ZenFone 5Z is the first (and only) phone in the market right now that should make OnePlus nervous, and will give some very serious competition to the excellent OnePlus 6 - it is arguably a bit better than the OnePlus 6 in a couple of areas (overall looks, speakers), and arguably a bit behind in a couple (software, water resistance), but overall, these 2 phones are pretty much neck-and-neck - which is saying something since the Zenfone 5z is significantly cheaper!
  • 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]
  • The shutter speed on the camera could have been slightly better - it's decent but not the best - it can sometimes get in the way when you're looking to take a quick shot, or clicking a moving subject
  • 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 most underappreciated phones around...an excellent all-round package
    gsmarena.com in-depth Read Review »
  2. A device you won’t regret buying
    phonearena.com in-depth Read Review »
  3. Asus has hit the ball right out of the park
    gadgets.ndtv.com in-depth Read Review »
  4. Exceptional value for money
    fonearena.com in-depth Read Review »
  5. Makes the OnePlus 6 look like an expensive flagship in comparison
    digit.in in-depth Read Review »
  6. The ‘flagship killer’ killer
    androidauthority.com in-depth Read Review »
  7. Will surely send jitters to premium market leaders
    ibtimes.co.in in-depth Read Review »
  8. A compelling alternative to the OnePlus 6
    androidcentral.com in-depth Read Review »
  9. What makes it stand out from the crowd is the AI-centric features
    themobileindian.com in-depth Read Review »
  10. beebom.com in-depth Read Review »
  11. digitaltrends.com in-depth Read Review »
  12. indianexpress.com in-depth Read Review »
  13. economictimes.indiatimes.com in-depth Read Review »
  14. hindustantimes.com in-depth Read Review »
  15. tomsguide.com in-depth Read Review »
  16. stuff.tv in-depth Read Review »
  17. firstpost.com in-depth Read Review »
  18. indiatoday.in in-depth Read Review »
  19. deccanchronicle.com in-depth Read Review »
  20. business-standard.com in-depth Read Review »
  21. techradar.com hands-on Read Review »
  22. bgr.in hands-on Read Review »
  23. alphr.com hands-on Read Review »
  24. expertreviews.co.uk 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. Flipkart4.5 775+ reviews »
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  2. Amazon4.2 80,631+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
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