How long am I going to wait ?
The waiting time for receiving an unlock code for OPPO phones starts from 1 to 2 working days.
Unlocking instruction for OPPO K7x ?
Enter the OPPO K7x phone code according to the instructions:
1 - Turn ON the OPPO phone.
2 - Enter *#3988691# on the keyboard
3 - A window to enter the code will appear on the screen.
4 - Enter the unlock code.
5 - OPPO K7x phone is now unlocked.