Our Opinion

The Vivo X21 is a significantly better phone, but the Xiaomi Redmi Note 5 Pro (4GB RAM) is significantly better value for money. Which phone should you buy? Depends on how much you want to spend!

Vivo X21  Xiaomi Redmi Note 5 Pro (4GB RAM) 
Vivo X21 Xiaomi Redmi Note 5 Pro
Buy Now Buy Buy
Excellence Score
70.2
50.3
Value for Money Score
75.6
89.3
Price ₹ 28,151 onwards ₹ 13,544 onwards
Launch Date (India) May, 2018 Feb, 2018
Expected Launch Date N/A N/A
Smartphone OS Android 8.1 OreoExpected update to 9.0 Pie Android 7.1 Nougat, Upgradeable to 8.1 OreoExpected update to 9.0 Pie
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.28 inches 5.99 inches
Screen Resolution 1080x2280 pixels (~ 402 pixels per inch) 1080x2160 pixels (~ 403 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 3 Yes, Corning Gorilla Glass
Display Features Super AMOLED, FullView Display, 2.5D Curved Glass, Eye Protection Mode 2.5D Curved Glass, FullView Display, Sunlight mode, Night mode, Reading mode, Color temperature adjustment, Standard mode
Full Physical QWERTY Keypad
Processor 2.2 GHz 1.8 GHz
Processor Type Octa Core Octa Core
Processor Name Qualcomm Snapdragon 660Ranked #14 in Mobile Processor Benchmarks Qualcomm Snapdragon 636Ranked #30 in Mobile Processor Benchmarks
GPU Adreno 512 Adreno 509
RAM 6 GB 4 GB
3G Yes Yes
4G Yes Yes
VoLTE Yes Yes
WiFi Yes Yes
GPS Yes Yes
Bluetooth Yes Yes
Connecting Port USB USB
Primary Camera 12MP + 5MP 12MP + 5MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (Full HD) Yes (Full HD)
Other Camera Features 12MP: F/1.8 Aperture; 1/2.5" Sensor Size; 1.4µm Pixel Size, 5MP: F/2.4 Aperture, Dual Pixel Sensors, Phase Detection Autofocus (PDAF), Geo-tagging, Touch focus, Face detection, HDR, Panorama 1.12um Pixel Size, F/2.0 Aperture, Phase Detection Autofocus (PDAF), Enhanced low-light Photography, HDR, Panorama, Burst mode, Face recognition
Secondary Camera 12.0MP 20.0MP
Secondary Camera Features F/2.0 Aperture, Screen flash Soft Selfie-light, 1.0um Pixel Size, F/2.2 Aperture, Beautify 4.0, Selfie timer, Face recognition, Full HD Video Recording
Internal Memory 128 GB 64 GB
Expandable Memory Slot up to 256 GB up to 128 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio Yes
Dual SIM GSM+GSM (Hybrid SIM slot) GSM+GSM (Hybrid SIM slot)
Thickness 7.37 mm 8.05 mm
Weight 156 gm 181 gm
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 3200 mAh 4000 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 Yes Yes, Quick Charge 2.0
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features In-display Fingerprint Sensor; Noise Filtration Noise Filtration
2-minute Review [Positives]
  • Refined, understated design - the phone is sleek and features an all-black aluminum frame and a glass back with tapered edges, which make it very comfortable to hold
  • Surprisingly easy to handle, especially considering the 6.28-inch screen - the tall 19:9 aspect ratio helps a lot, and it also gives the front of the phone that modern bezel-less look everyone craves these days
  • Fans of minimalism will enjoy the Vivo X21 too - with the fingerprint sensor hidden under the screen, the back of the phone is very clean
  • The key USP of the phone, however, is the world's first under-display fingerprint sensor - the sensor works well most of the time, although it can be buggy now and then
  • In case you are not into that, you can also opt for the infrared-based facial recognition, which is fast and accurate, and pleasantly works in all kinds of lighting conditions
  • The Vivo X21’s display is otherwise beautiful too with the characteristic vibrant color palette and inky blacks of an OLED display - it has excellent brightness levels, and outdoor visibility too
  • The Vivo X21 also features an always-on display that looks pretty similar to Samsung’s implementation, with a clock and other notifications on screen
  • Good speed/performance backed by the solid Snapdragon 660 processor and an ample 6GB of RAM - mostly, in actual use, you will be hard pressed to see any differences in performance even compared to the top-end Android flagships like the Pixel 2 or the Galaxy S9
  • Decent dual camera setup at the back - does well especially in good lighting conditions, and with bokeh effects - it's not quite to the level of the Pixel 2 or the Galaxy S9 - but for its price bracket, it does a decent job
  • The front 12MP camera is decent too, and can also do (software based) bokeh images
  • Good audio quality via headphones
  • The single bottom-firing speaker also gets pretty loud
  • Good battery life - will last the day with medium to heavy use
  • Fast charging support
  • Nice, utilitarian (though not exceptional) design and good build quality, as has been the case with the entire Redmi Note series
  • Nice looking, modern 5.99 inch 18:9 display, with minimal bezels - has good viewing angles, brightness levels, and colour reproduction - looks pleasing in day-to-day use
  • In spite of the large screen, the phone remains quite ergonomic because of the tall, minimal-bezel form factor
  • MIUI interface over Android is snappy, and offers some added features such as dual apps and second space - with dual apps, one can run separate accounts of the same service/app and the second space functionality provides separate user experiences for example for work and home
  • Stellar performance - the single most defining aspect for the Note 5 Pro may be the excellent new chip that powers it - the Snapdragon 636 - in short, in terms of both benchmarks, and real life use, it blows every other phone in the price bracket out of the water - be it the loading times for heavy games, opening multiple apps or just switching between multiple heavy apps and games - the phone simply sails through everything
  • The heat management is excellent too - the phone hardly gets warm even after playing games on the phone for an hour straight
  • Very good set of dual cameras at the rear - you have a 12MP primary camera (Sony IMX486) with a sensor size of 1.25um and an aperture of f/2.2 - the secondary 5MP camera is used for depth sensing only and has a sensor size of 1.12um with f/2.0 aperture - in ample lighting conditions, the camera captures a good amount of details and has a punchy colour reproduction - low light image capabilities are equally good and the camera has good dynamic range - even the portrait (bokeh) images look better than most of its competitors - they carry plenty of details and the background blur is also quite good
  • Overall, this is the arguably the best camera phone in this price bracket now, having a slight edge over the existing top camera phones in the bracket, like the Xiaomi Mi A1
  • Very good front camera too - takes good images in all kinds of lighting conditions - you also get software based portrait image, which lets you take that ‘Bokeh’ image with background blur and is decent
  • Good audio quality through both headphones, and the speaker
  • Good call quality
  • Stellar battery life - still runs for two days straight, continuing the tradition of the Redmi Note series
  • Decent (though not great) charging speed - takes a little over two hours to fully charge the Xiaomi Redmi Note 5 Pro’s 4, 000mAh battery
  • On the whole, Redmi Note 5 Pro offers everything you need from this price bracket - superior performance, excellent battery life and a good camera - simply put, this is almost a complete package when it comes to mid-range smartphone
2-minute Review [Negatives]
  • No water resistance - a feature thats now present in most phones in this price bracket
  • One area where the X21 loses out is the refinement of the UI - the OS which is basically a copy of the iOS, can often be un-intuitive, and sometimes buggy - the devil is in the details - and details are not very well done here
  • Uses the old microUSB standard, instead of the modern USB-C port
  • On the whole, the Vivo X21 is a good all-round phone, and has an innovative under-glass fingerprint sensor, but it's let down to some extent by its UI - everything considered, unless you are into the cutting edge fingerprint sensor tech, you are likely to find better overall value devices in this price segment, like the OnePlus 6, or the Honor 10
  • The design is simple and works, but is largely a continuation of the old Redmi Note design - it's not a gorgeous, stand out device by by any means
  • While MIUI is one of the nicer Android UIs, it does have some bloat in terms of unneeded apps - and a lot of people still prefer a more stock Android approach
  • While the cameras are excellent in still photography, they are only average as far as video recording goes
  • Still continues with the old micro USB standard, there is no modern USB Type-C support
Expert Reviews
  1. The under-display fingerprint scanner is a welcome change in the tech industry
    fonearena.com in-depth Read Review »
  2. Vivo X21 is an all-rounder with good performance, decent camera performance and a snazzy new in-display fingerprint scanning technology
    bgr.in in-depth Read Review »
  3. If you must have bleeding-edge technology in your phone, the Vivo X21 fits the bill: It's the only widely available phone with this type of fingerprint sensor
    mashable.com in-depth Read Review »
  4. The Vivo X21 is a fun device that gets a lot of things right
    androidauthority.com in-depth Read Review »
  5. A device for tech enthusiasts
    beebom.com in-depth Read Review »
  6. The Vivo X21 is a device straight out of the future
    indiatoday.in in-depth Read Review »
  7. cnet.com in-depth Read Review »
  8. gadgets.ndtv.com in-depth Read Review »
  9. forbes.com in-depth Read Review »
  10. indianexpress.com in-depth Read Review »
  11. economictimes.indiatimes.com in-depth Read Review »
  12. androidcentral.com in-depth Read Review »
  13. deccanchronicle.com in-depth Read Review »
  14. gadgetsnow.com in-depth Read Review »
  15. firstpost.com in-depth Read Review »
  16. techradar.com hands-on Read Review »
  1. Without a doubt the top budget performer right now
    techradar.com in-depth Read Review »
  2. There’s really no matching the Redmi Note 5 Pro in terms of performance and features at this price
    gadgets.ndtv.com in-depth Read Review »
  3. The Redmi Note 5 offers everything you need from a sub-15K phone today - superior performance, excellent battery life and a good camera.
    digit.in in-depth Read Review »
  4. It takes the title of our favorite mid-range smartphone of 2018
    bgr.in in-depth Read Review »
  5. fonearena.com in-depth Read Review »
  6. androidauthority.com in-depth Read Review »
  7. indianexpress.com in-depth Read Review »
  8. economictimes.indiatimes.com in-depth Read Review »
  9. hindustantimes.com in-depth Read Review »
  10. androidcentral.com in-depth Read Review »
  11. themobileindian.com in-depth Read Review »
  12. deccanchronicle.com in-depth Read Review »
  13. firstpost.com in-depth Read Review »
  14. gadgetsnow.com in-depth Read Review »
  15. indiatoday.in in-depth Read Review »
  16. beebom.com in-depth Read Review »
  17. business-standard.com in-depth Read Review »
  18. news18.com hands-on Read Review »
User Reviews
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Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
Individual Review

[India] Vivo X21 review: includes innovation that rewrit...

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[India] Vivo X21 review: includes innovation that rewrit...

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Redmi Note 5 Pro Review: Should You Buy?

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