vivo X21
vivo · catalog updated 2026-10-21
- Brand
- vivo
- Kind
- Android phone · released 2018-05 · last update Android 8
- Model codes
- vivo 1725
International X21 with in-display fingerprint sensor. Ships with Funtouch OS 4.0 (Android 8.1) per Digit. Model code per DeviceAtlas. Release month: India launch on 29 May 2018 per The Mobile Indian; the X21 was sold in China earlier in 2018. No Android update is documented, so this is the version it shipped with.
The app can't run on the vivo X21
Its last official update is Android 8, and the app needs Android 10 or later.
Gestures are set up in the phone settings as shown, then combined into a trigger recipe in the app, where practice mode shows step by step whether a gesture would trigger.