UMT Nokia C20 unisoc how to connet to computer is aways power on when put usb cable

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Nokia C20 unisoc how to connet to computer is aways power on when put usb cable. Or those require any special key combintion

 

[lahdache]

1- power off phone .

2- connect usb to power off phone ( use diag mode button)

3- after phone connect do factory reset.

press thx.