Samsung phone's has self test technology

[Anonymous]

Just dail *#0*# 

Select any option and you can also check everything. After that, Tap continuously on back button so, you can exit the screen

[n_e_k_on]

Hey my device is m01 and if I enter the code then the code get automatically deleted and nothing happens

[n_e_k_on]

What to do

[n_e_k_on]

Ooo then how it can be resolved

[n_e_k_on]

Lol

[Anonymous]

Real tech guy 😁 😁

[Anonymous]

I have edited.

[Anonymous]

👏👏