How does the phone get into hardware detection?

Mode 1: Command path

1. Some models can enter *#*#64663#*#* or *#*#6484#*#* into the hardware detection on the dialing interface.

2. Some models can enter *#66*# into the hardware detection on the dialing interface.

 

Mode 2: About phone path

1. You can enter the hardware detection by Setting - About phone, click "Kernel version" four times in a row.

2. You can enter hardware detection by Settings - My device - All parameters - click "Kernel version" four times in a row.