iPhone 6s boot loop

Question

iPhone 6s

2015年9月25日にAppleから発売されたiPhone 6Sの修理情報とガイドです。モデル A1688、A1633。

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Andre Warren Jr @andrewarren

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投稿日: 2017年5月10日

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iPhone 6s boot loop

I replaced the screen on my iPhone 6s and I followed to ifixit handbook and everything and when I went to power the screen on. I started getting a boot loop. I took it to a repair shop and they said they couldn't find what was wrong. I've tried all the boot loop methods online and I've tried restoring. Nothing has worked. I've been told the mother board has been fried by research and I don't understand why that's so. Nothing looks broken everything looks the way it should

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Have you tried changing the battery?

rayeasom さんによる2017年5月11日

Yes.........

Andre Warren Jr さんによる2017年5月11日

Maybe there is a short in the LCD connector or light ic or cap

Sharfaz さんによる2018年5月18日

The screen that is not original can cause bootloop in this case try another screen

hamitouche さんによる2020年2月14日

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Minho @refectio

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投稿日: 2017年5月10日

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I know you said you tried all of the boot-loop suggestions but you don't tell us which ones. So for the record, I'll post some ideas below and tell us if there's anything in there that you haven't tried. That way we'll be able to help a you a bit more.

A few things to consider:

Try these things (if you haven't already) to see if anything helps:

Try a hard reset (Home & Power button for 10 secs)
Use a genuine Apple Lightning connector
Use a genuine Apple charging brick and let it charge overnight
Try to connect it to different computers (mac/pc if possible) with an updated iTunes
Put the phone in recovery mode (search DFU Mode). Careful, this can reset your data
Use 3uTools for putting it in and out of Recovery Mode
Use 3uTools to flash the firmware (you can't downgrade)
Check the condition of all the flexes (with magnification)
Disconnect the Front Camera Ribbon from the logic board and reboot your phone
Disconnect the screen assembly completely and see if iTunes will recognize the phone.

Otherwise, you probably have a logic board issue. If you are uncomfortable doing these steps, consider finding a repair shop that does micro-soldering; they can go deeper if the problem is not modular in nature.

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4 件のコメント:

Your answers are good as always :)

Also OP exactly how long does it stay on the apple logo then shut off and boot up again? This can tell us what areas of hardware faults we should be looking at.

Ben さんによる2017年5月10日

I tried the hard reset. And I just tries the disconnecting the camera. It had about a 5 minute boot loop and just sated on the black screen. Let me ask one question that might help. When I did the screen repair I didn't disconnect the battery. Could that be a problem?

Andre Warren Jr さんによる2017年5月11日

Not disconnecting the battery prior to the removal of the screen can certainly cause problems with the backlight circuit.

However, I would be more concerned that you may have caused Long-Screw Damage. That is when you accidentally put a long screw where a short screw would go (usually on the Display bracket). If you didn't keep track of the screws and their placements, this is a real possibility.

At this point, I would consider finding a repair shop that does micro-soldering to properly troubleshoot your phone.

Minho さんによる2017年5月11日

I make this tes : Disconnect the screen assembly completely and see if iTunes will recognize the phone. I itune don't detect my iphone is it normal ?

Christopher Beaudry さんによる2022年1月8日

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Maybe there is a short in the LCD connector or light ic or cap — Sharfaz
The screen that is not original can cause bootloop in this case try another screen — hamitouche
Your answers are good as always :)

Also OP exactly how long does it stay on the apple logo then shut off and boot up again? This can tell us what areas of hardware faults we should be looking at. — Ben
I tried the hard reset. And I just tries the disconnecting the camera. It had about a 5 minute boot loop and just sated on the black screen. Let me ask one question that might help. When I did the screen repair I didn't disconnect the battery. Could that be a problem? — Andre Warren Jr
Not disconnecting the battery prior to the removal of the screen can certainly cause problems with the backlight circuit.

However, I would be more concerned that you may have caused Long-Screw Damage. That is when you accidentally put a long screw where a short screw would go (usually on the Display bracket). If you didn't keep track of the screws and their placements, this is a real possibility.

At this point, I would consider finding a repair shop that does micro-soldering to properly troubleshoot your phone. — Minho
I make this tes : Disconnect the screen assembly completely and see if iTunes will recognize the phone. I itune don't detect my iphone is it normal ? — Christopher Beaudry