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4-inch iPhone released in March 2016 with similar hardware specifications to the 6s. Available in Silver, Space Grey, Gold, or Rose Gold with 16/64 GB storage options. Model A1662 and A1723.

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Phone is overheating after battery is replaces and Water damage

I dropped my phone in water 2 months ago and i got it repaired I replaced the battery and now it is overheating and dying quickly I don't know what is wrong with it because the guy that fixed it said I should have no more problems, anyone know why it could possibly be doing this? Also the Touch ID has stopped working.

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Could be a short on the board. Do you know if when it was fixed, they cleaned the board with alcohol, or preferably ran it through an ultrasonic cleaner, with shields removed? If it wasn't cleaned or if the shields weren't removed, there could be corrosion.

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They said they ran it through an ultrasonic cleaner, they said nothing about shields though. If it's corrosion could that make my phone brake and not comeback on? Is there a way to fix corrosion?


You definitely want to take the shields off before putting it in the ultrasonic cleaner. Otherwise, it's like taking a bath with your clothes on still. Corrosion can definitely cause those problems, especially when the device has power sent to it.


Alright, I will go and ask if they will make sure the logic board and shields are good . Thanks


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