Our Opinion

The Vivo X21 is a significantly better phone than the Oppo F7 (6GB RAM, 128GB), and is also significantly better value for money. What should you buy? Go for the Vivo X21!

Oppo F7 (6GB RAM, 128GB)  Vivo X21 
Oppo F7 Vivo X21
Buy Now Buy Buy
Excellence Score
53.7
68.6
Value for Money Score
66.7
72.2
Price ₹ 23,890 onwards ₹ 28,191 onwards
Launch Date (India) Mar, 2018 May, 2018
Expected Launch Date N/A N/A
Smartphone OS Android 8.1 OreoLow likelihood of getting updated to next Android version Android 8.1 OreoExpected update to 9.0 Pie
Touchscreen Yes (Capacitive) Yes (Capacitive)
Screen Size 6.23 inches 6.28 inches
Screen Resolution 1080x2280 pixels (~ 405 pixels per inch) 1080x2280 pixels (~ 402 pixels per inch)
Tall Aspect Ratio / Minimal Bezels Yes Yes
Scratch Resistant Display Yes, Corning Gorilla Glass 5 Yes, Corning Gorilla Glass 3
Display Features LTPS IPS LCD, FullView Display Super AMOLED, FullView Display, 2.5D Curved Glass, Eye Protection Mode
Full Physical QWERTY Keypad
Processor 2 GHz 2.2 GHz
Processor Type Octa Core Octa Core
Processor Name MediaTek Helio P60Ranked #20 in Mobile Processor Benchmarks Qualcomm Snapdragon 660Ranked #15 in Mobile Processor Benchmarks
GPU Mali-G72 MP3 Adreno 512
RAM 6 GB 6 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 16.0MP 12MP + 5MP
Camera Auto-Focus Yes Yes
Camera Flash Yes Yes
HD Video Recording Yes (Full HD) Yes (Full HD)
Other Camera Features F/1.8 Aperture, Phase Detection Autofocus (PDAF), Geo-tagging, Touch focus, Face detection, HDR, Panorama 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
Secondary Camera 25.0MP 12.0MP
Secondary Camera Features F/2.0 Aperture, HDR, Sony IMX576 Sensor, AI Camera F/2.0 Aperture, Screen flash
Internal Memory 128 GB 128 GB
Expandable Memory Slot up to 256 GB up to 256 GB
Contacts Storage Unlimited Unlimited
SMS Storage Unlimited Unlimited
Music Player Yes Yes
FM Radio
Dual SIM GSM+GSM GSM+GSM (Hybrid SIM slot)
Thickness 7.8 mm 7.37 mm
Weight 158 gm 156 gm
Audio Output 3.5mm jack 3.5mm jack
Water Resistant
Battery Capacity 3400 mAh 3200 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
Other Battery Parameters N/A N/A
Fingerprint sensor Yes Yes
Other Features Noise Filtration In-display Fingerprint Sensor; Noise Filtration
2-minute Review [Positives]
  • Very light
  • Nice looking, notch-based full screen design, that is in trend these days following the launch of the iPhone X
  • The fingerprint sensor at the back is quick and accurate, and face unlock also works quickly
  • The phone’s tall 6.23-inch LCD IPS display with full HD+ resolution is sharp and impressive
  • The Oppo F7 uses the company’s Color OS user interface, on top of Android - it’s a reasonably good single-layered UI with a heavy focus on visuals and apps built by Oppo
  • Good speed/performance - the phone handles both basic use, and graphic-intensive games fairly well, and you will get a clean, lag-free experience
  • Good rear and front cameras - pictures taken with the Oppo F7 are surprisingly good for the price of the phone, despite not having as many sensors as you’d expect from smartphones these days - the single-camera setup on either side might come across as inadequate, but the camera makes up for this with its AI chops - pictures are generally well composed and look good, with accurate colors and sharp contrast where needed
  • The AI abilities are really put to work in getting the depth-effect and vivid-mode shots - despite the single-camera setup, portrait shots with the front camera are excellent, getting colors, depth-effect and boundaries fairly accurately - the rear-camera’s portrait mode is decent too
  • Overall, the camera capabilities are on par with the very good cameras on the Xiaomi Redmi Note 5 Pro, and the Vivo V9 - which are also likely to be the Oppo F7's main competitors
  • Battery life is good as well, with the phone comfortably running for a full day on a single charge with moderate use
  • On the whole, the Oppo F7 is a good choice for a stylish looking device that takes especially good selfies - it also has a slight edge over its main competitor, the Vivo V9 in terms of performance, overall camera quality, and battery life (though in terms of design and build quality, the Vivo V9 is ahead)
  • 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
2-minute Review [Negatives]
  • The phone is primarily built of plastic, and the build quality could have been better at this price point
  • There is no fast charging tech, so charging the Oppo F7 will take a while – about two hours (or a little more) to fully top up the battery with a regular charger
  • Charging and data transfers use a micro-USB port, which is a little old school in this age where even budget devices are going to USB Type-C way
  • 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
Expert Reviews
  1. Between this and the Vivo V9, we’d recommend the Oppo F7 as it is better in terms of battery life, camera quality, and CPU performance
    gadgets.ndtv.com in-depth Read Review »
  2. The screen is everything here... with its edge-to-edge design
    bgr.in in-depth Read Review »
  3. The F7 smartphone leads with its impressive selfies, premium display, customizable UI and reliable battery
    ibtimes.co.in in-depth Read Review »
  4. Up to date with a notch and a truly big screen
    livemint.com in-depth Read Review »
  5. techradar.com in-depth Read Review »
  6. fonearena.com in-depth Read Review »
  7. thequint.com in-depth Read Review »
  8. gadgetsnow.com in-depth Read Review »
  9. business-standard.com in-depth Read Review »
  10. firstpost.com in-depth Read Review »
  11. deccanchronicle.com in-depth Read Review »
  12. indianexpress.com hands-on Read Review »
  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 »
User Reviews
  1. Flipkart4.5 378+ reviews »
  2. Amazon4.5 156+ reviews »
  1. Flipkart4.3 225+ reviews »
  2. Amazon4.3 48+ reviews »
Official Website Official Website » Official Website »
Unofficial specs? N/A N/A
Individual Review 2
  • Individual Review 2
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