What are the main specifications and features of iQOO?

What is Game mode?

How to register iQOO account?

How to make my phone last for longer time?

What is FBE Encryption Technology?

What should I do if my phone lags or hangs sometimes?

Why does my signal indicator shift from 4G to H every time I make a phone call?

What should I do if my device cannot be powered on?