Usually when this kind of damage symptoms are: components such as LED lights, vibration and buzzer on the phone will not work, often hangs.
The fix:
- We use a power supply with 1 milli amperes or 1000 amperes,
- We connect the cables according to the procedure
- Before turning the rotary voltage to 0 v.
- Turn on and turn the voltage to 3.7 V (corresponding to the battery) with a tolerance of 0.5
- When your phone is off / off wait a minute and look at the needle.
amperes on the power supply will rise approximately 100 milli ampere and your phone will live by itself without you turn it on. So also will vibrate and the vibration, LED lights will light up.
amperes on the power supply will rise approximately 100 milli ampere and your phone will live by itself without you turn it on. So also will vibrate and the vibration, LED lights will light up.
- Perform release CU IC on the PCB phones. Then try to turn back.
- It will appear insert sim card.
- Buy a new CU IC and install
- Turn back and god willing, your phone will function properly again
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