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Appleの iPhone 5sは2013年9月10日に発表されました。このデバイスの修理は全モデルの修理と類似しています。そしてスクリュードライバー、こじ開けツールが必要です。GSM か CDMA、16か32、64GBがあり、色はシルバー、ゴールド、スプレーグレイが選べます。

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iPhone 5s - keeps turning off and can't turn back on

After ios11 update my iphone 5s doesn’t stay on, not sure if that's just a coincidence. The phone works quite happily if I can get it to turn on which is often a challenge (I’ve tried pressing the home button while holding power button which usually yields better results but doesn’t work every time). Once it’s on I can load apps, surf web, check emails and everything functions normally, I’ve done this happily for anything between 2 mins and an hour but the problem appears to happen when it is in standby. After a short period of time I find it has switched off / black screen and it takes a lot of effort to get it back on, if I can get it on at all.

If I plug it into a pc when it is off / showing a black screen itunes recognises it’s in recovery mode and I can do a restore. I tried rolling it back a version but now os 10.x is unsigned I could only go to 11. I’m guessing its reverting to dfu mode if itunes can see it but I'm not sure as it won't come back on easily. I’ve replaced the battery and this charges up ok. Tried all the standard stuff, hard reset, etc. although most times this reset results in me struggling to turn it on again.

I’ve now bought an se. I was able to install all my se settings/apps to the 5s without problem (phone to phone transfer) and it updated to ios 11.2.5. Again, I used it for a while before putting it on standby. I left it plugged in this time, popped to the loo but the same result when I returned a couple mins later.

I’ve read about replacing the U2 IC but I’m not 100% this issue is completely consistent with the issue. Any thoughts on how I might resolve this are appreciated?

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Having read this post 5s crashes (black screen) when locked unless apps are running. I tried adding a white noise app and leaving it on, I left it on overnight and the phone did not turn off or drain the battery too significantly. Although this is a terrible workaround it works but just gives me more questions about what is causing this to happen, any ideas gratefully received.

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The only thing that may fix this issue is replacing the Tristar, but after that this specific issue usually never gets fixed.

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Cheers Ben, I'll try that when I get a chance and post back if it solves it, I mean what's the worst that'll happen!

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Hi Lenny

I had the same issue on mine. I did eventually replace it with a newer phone, but I kept around because I wanted to try to fix it. I recently updated it to the newest iOS and it seems to be working OK. No running white noise anymore or anything. Anyway, give updating it a try and see if that helps. Best of luck!

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Hey guys please i’m using iPhone 5s

it does the random switch off thing

sometimes if I lock it it’s turns off totally or if it goes to sleep

for me to use it properly …. it’s always on its doesn't go to sleep or lock its it please help

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Hey guys my iphone 5s turned off when my phone was on 45% and it doesnt turn on unless the charger is in but my phone turns on with the apple sign the sometimes cone up with a red screen but recently just been goung black after do anyone know how to fix it and should i keep it on charge to see if it turns on

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Lenny さん、ありがとうございました!
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