[Phone] Phone Frequently Asked Question (FAQ)

[FAQBot]

[Phone] Phone Frequently Asked Question (FAQ)

The following is the collection of Frequently Asked Question (FAQ) for Phone products and you may find a troubleshooting solution to resolve the problem you met.

Problem Category	Problem item	FAQ link
System boot/shutdown abnormally	Cannot power on/off	Troubleshooting - Phone can not boot up
	System Unstable (Hang)/OS Error	Troubleshooting - When the application you installed unexpectedly quits, stops responding, or cannot...
		Phone system crashed or system is unstable
Display/Touch panel	Abnormal display	Troubleshooting for screen flickering or abnormal display
	Touch screen Error	Troubleshooting for Touchscreen response issues
Adapter/Battery/Charge	Battery drains / Over discharge	Troubleshooting - Power percentage display is abnormal
		How to enable 'Detect battery-draining apps' function?
	Adapter Function Error	Troubleshooting - Abnormal charging
Phone dialing	SIM card	Troubleshooting - Fail to detect and read SIM card
	Phone dialing	Troubleshooting - Issues of making or receiving calls
	Wi-Fi connecting	What to do if my phone won't connect to a Wi-Fi network?
	3G/4G/5G data transmission	Can't use 3G/4G/5G mobile networks
Firmware/BIOS/FOTA	Update firmware(FOTA)	How to update firmware on my phone?
		Why I don't get notification of system update (FOTA)?
		Software - Firmware update fail
		Troubleshooting- Phone device cannot detect the system updates or fails to download the update