Which SIM card of carrier in Chinese Mainland can vivo phones sold out of Chinese Mainland support?
The call ends automatically when talking on my vivo phone. What should I do?
The signal is unstable. What should I do?
Why can others not call me but I can phone them?
Why is my phone bill charged gratuitously?
Why can I not record the calling voice via Screen recording with Record Voice on?
Why does my phone make phone calls automatically?