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Vivo X21: Most Frequently Asked Questions (FAQ)

The Vivo X21 (or Vivo X21 UD) has officially arrived in India for Rs 35,990 and is shaping up to be a really great smartphone offering. This premium flagship has quite a lot of things working in its favor, primarily the revolutionary under-display fingerprint sensor.

This is the first phone with an under-display fingerprint sensor launched in India and I’m sure you must have a ton of queries and doubts about the device. Well, here are the answers to the frequently asked questions (FAQs) about the Vivo X21:

Tech Specs and Hardware

  • What are the tech specs of the Vivo X21?
Dimensions154.5 x 74.8 x 7.4 mm
Weight156.2 g
Display6.28-inch Full-HD+ Super AMOLED
ProcessorSnapdragon 660
GPUAdreno 512
Internal Storage128GB
Primary CameraDual 12MP (f/1.8) + 5MP (f/2.4) with PDAF and LED Flash
Secondary Camera12MP (f/2.0)
Operating SystemAndroid 8.1 Oreo-based FunTouch OS 4.0
SensorsIn-Display Fingerprint, Accelerometer, Proximity, Compass
ConnectivityHybrid Dual Nano-SIM, Wi-Fi 802.11 A/b/g/n/ac, Bluetooth 5.0, -GPS, GLONASS, microUSB Port
  • Does the Vivo X21 have a notch?
Yes, the Vivo X21 has a notch but sports an option to hide the same. There’s also a small chin on the device, which is quite similar to the OnePlus 6.
  • What is the screen-to-body ratio?
The Vivo X21 boasts of a 90.3 percent screen-to-body ratio.
  • What processor is used in the Vivo X21?
The Vivo X21 is powered by the Snapdragon 660 octa-core processor with 4 Kryo cores clocked at 2.2Ghz and the other 4 at 1.8GHz respectively.
  • How much RAM does the Vivo X21 have?
The Vivo X21 comes only in one variant, and it has GB of RAM.
  • Does the Vivo X21 have dual cameras?
Yes, the Vivo X21 comes with a 12MP (f/1.8) + 5MP (f/2.4) dual camera setup on the rear.
  • Does the Vivo X21 have a headphone jack?
Yes. Even though it’s a flagship smartphone, the Vivo X21 has not gotten ridden of the 3.5mm headphone jack.
  • Does the Vivo X21 have a USB-C port?
No, the company has stuck with the microUSB port even at its premium price point.
  • What’s the battery capacity of the Vivo X21?
The Vivo X21 comes with a decent 3,200mAh battery.
  • Does the Vivo X21’s camera have EIS or OIS?
No, the Vivo X21 neither has EIS nor OIS on board for video stabilization.
  • Does the Vivo X21 have stereo speakers?
No, the Vivo X21 only has a single bottom-firing speaker and no stereo speakers.
  • Does the Vivo X21 feature a notification LED?
No, the Vivo X21 doesn’t have a notification LED, but it does have flashlight alerts.
  • Is the Vivo X21 waterproof or not?
No, the Vivo X21 is not waterproof. It does not feature any form of IP certification.
  • Does the Vivo X21 have wireless charging?
No, even though the device has a glass back, there is no wireless charging support.

Under-Display Fingerprint Sensor

  • How good is the under-display fingerprint sensor?
The under-display fingerprint sensor sure is revolutionary, but the authentication is a little slow right now, thanks to it being the first generation of this technology.
  • Will it work with a tempered glass applied on screen?
Yes, the under-display fingerprint on the Vivo X21 works flawlessly even when a tempered glass is applied to the device.
  • Does it work with oily or dusty fingers?
Yes, the Vivo X21 shows no hiccups in unlocking with oily (just after lunch or cooking) or grimey (when you’re eating a bag of chips) fingers.
  • Does the sensor work with wet/ moist fingers?
No, the Vivo X21 does not work with wet fingers. The under-display fingerprint sensor is unable to recognize your fingerprint. You can read our in-depth review of the fingerprint sensor to know more about it.
Buy the Vivo X21 on Flipkart (Rs 35,999)


  • How good is the overall performance?
With a Snapdragon 660 SoC under the hood and a heavily skinned version of Android on top, the Vivo X21 showed no hiccups during our time with the device.
  • Can the Vivo X21 run PUBG Mobile?
Yes, the Vivo X21 runs PUBG Mobile at medium settings and high frame rate by default. I did not face any noticeable frame drops/ lags and the game runs quite smoothly.
  • How is the portrait mode on the Vivo X21?
The portrait mode on the Vivo X21 is good enough, with minor issues with edge detection.
  • Is there portrait mode on the front camera?
Yes, the front 12MP camera on the Vivo X21 has portrait mode and its performance is very similar to the rear setup.
  • Can it shoot 4K video?
Yes, both the front and rear camera of the Vivo X21 are capable of shooting 4K video.
  • Can you replace the navigation bar with gestures?
Yes, you can replace the 3-button navigation bar with gestures and they’re quite intuitive (similar to the iPhone X but slightly better than those on Android P beta)
  • How long does the Vivo X21’s battery last?
The 3,200mAh battery will easily last you a day on medium to high usage.


  • Does the Vivo X21 have dual SIM support?
Yes, the Vivo X21 comes with a hybrid dual nano-SIM card tray, where you can use the second SIM slot to expand storage up to 256GB via microSD card.
  • What version of Bluetooth does the Vivo X21 have?
The Vivo X21 comes with Bluetooth version 5.0.
  • Does the Vivo X21 support 4G VoLTE?
Yes, the Vivo X21 does support 4G VoLTE, so no worries in this department.
  • Does the Vivo X21 support 5GHz WiFi networks?
Yes, the Vivo X21 supports 5GHz Wi-Fi, so you shouldn’t face any problems connecting to any Wi-Fi network.

Miscellaneous Questions

  • How long does the Vivo X21 take to charge completely?
It takes the Vivo X21 just under two hours to charge from 5% to 100% using the 9V/2A charger that comes inside the box.
  • Does the Vivo X21 support fast charging?
Yes, the Vivo X21 supports quick charging with the bundled charger.
  • What’s the pricing of the Vivo X21?
The Vivo X21 has been priced at Rs 35,990.
  • Where is the Vivo X21 available to purchase?
The Vivo X21 is available exclusively on Flipkart at a price of Rs 35,999, along with a ton of launch offers.

Well, these are the answers to all of your most frequently asked questions about the Vivo X21 with an under-screen fingerprint sensor. But, if you still have any doubts or queries about the device then don’t hesitate to shoot off your questions in the comments below.

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