What should I do if I forgot the password of my vivo account?
Does V21 support display real-time network speed on the status bar?
Does V21e support 4K video？
Can I take selfie videos under Slow Mode via Front Camera on my V21e？
What features does Ultra Game mode include on V21e?
Does V21e support extended RAM？
How to register vivo account?
How to find my phone?
Which camera-pairing option of Double-View video mode does V21e support?