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Repair information, troubleshooting tips, and guides for the sixth iteration of Apple iPhone, announced on September 12, 2012. Model: A1428, A1429

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iPhone 5 shutting down

So alike to my 5s, my iphone 5 is having the exact same problem (batt died, didn't change it till about halve a year later), its shutting down by itself when not in use, what's different is that there are lots of panic code in the diagnostic.

Problem:

Phone keeps shutting down when not in use, changing battery doesn't solve the problem.

Question:

Which IC is broken? Or what else could it be?

PS.

Reset, restore did nothing, also tried removing the proximity.

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Power management IC no doubt. U2 Tristar Charging IC does not cause this.

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I have an iphone 5 with the same prob, so U2 of both phones busted?

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It's not U2 it's PM IC.

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If the main power ic is busted it won't even turn on right?

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No because I have a iPhone 6 with this exact same issue which causes intermittent shut down issues (Already tried another battery).

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Before you go into the motherboard troubleshooting I would suggest that you charge the battery up to 100%, open up the phone, disconnect the charging port and proximity sensor and see if it still shuts off. If the problem is gone then re-connect the parts one by one until the problem re-occurs.

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Proximity already changed as it was broken, didn't solve the problem. I will try to unplug the charging port as well, thank you, will get back to you in about 9 hours.

Previously I'd thought that unplugging the proximity oughta fix it, it didn't, so I changed it, didn't fix it as well.

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So far its still on, I'll see for a few days if it'll stay on like this, usually when batt gets around 70% it'll start turning off fast.

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To be sure that it doesn't happen during this activity, open up a 10 hour long YouTube video and let it run for a while

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My iPhone switches off when I lock it or when it’s go to sleep mode and for me to use it the screen must be on all the time please help

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i would send it to the store you got it from and see if they can do anything about

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Haha I got it back in 2013, in Tokyo, I'm currently in Jakarta

sad(T ^ T)

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Anon545454 zal eeuwig dankbaar zijn.
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