Rep: 293
5
5
1
My iPhone 5c doesn't connect to iTunes, turn on, charge or repaid after a hard reset. I took it into a phone shop and they sai it could be battery or an IC fault. So I replaced the battery and still no life. Can anyone help me figure out what is wrong and what an IC fault is and how it can be fixed.
Thanks
Chris
Questa è una buona domanda?
Rep: 1k
8
8
2
The issue isn't the battery, it will be the IC chip in the phone.
It turns out that if anyone uses a third party charger it may not only cause physical damage, but it can cause internal damage to the U2 IC chip in the logic board.
The U2 IC chip controls the charge to the battery, the sleep/wake button, some USB functions, and regulates the charging power to the power IC that actually charges the phone. When damaged, the chip can fail to work properly, which prevents an iPhone 5 from turning back on. While a fresh replacement battery will power the iPhone, once the battery is depleted, the issue resurfaces.
So I advice to take it to the phone repair shop as this would be a challenging repair.
If I have helped please accept the answer and let me know how you get on! All the best.
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Ryan, thanks for this - do you have any experience in repairing board level components? I'm trying to find indicators of a bad IC on an iPhone 5C and I'm not entirely sure what I need to see to confirm my suspicions. (although I know it's at fault because nothing else works!)
Can these chips only fail due to damage from third party chargers or water damage? or is it possible that impact damage can short them out too?
Thanks!
Will
If it is U2 then the phone should still come on with a new battery.
Unless the battery has no charge, right?
Before touching logic board you can simply replace the battery ans see whether visuals come. U2 can be replaced but sound BGA reworking skills required otherwise it ends with dead logic board.
Rep: 13
1
the chip of the iphone can be fixed?
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