How to open test menu in emergency call mode to activate ADB for Samsung, Huawei, Motorola, LG, Xiaomi, Alcatel, Sony, OPPO. Vivo, Lenovo, Honor.
| Brands | Emergency call Menu |
| Samsung | *#0*# *#*#88#*#* |
| Huawei | *#*#2846579#*#* |
| Motorola | *#*#2486#*#* |
| LG | *#*#4636#*#* |
| Xiaomi | *#*#6484#*#* |
| Alcatel | *#2886# |
| Sony | *#*#7378423#*#* |
| OPPO | *#899# |
| VIVO | *#*#225#*#* |
| Lenovo | *#*#4636#*#* |
| Honor | *#*#2345#*#* |
Why using secret codes in Emergency mode?
- To check software version, model number
- To enable ADB mode using GSM tools
- Remove FRP locks