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这款4.7英寸iPhone于2014年9月19日发布，是iPhone 6 Plus的缩小版。

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iPhone crashing, but only with screen attached.

Hey guys! I have an iphone 6 here that crashes and reboots after about a minute of use. I wasn't able to restore it until I tried with the screen removed, so it appears that its stable without the screen. The backlight circuit looks good, vcc main is free of shorts. There is no trace of water damage or burned components. I've tried replacing every external component, so I'm pretty sure it's a board level problem, but I'm at a loss at this point. Any ideas as to where I should start poking round?

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Try screen without front cam assembly and without home button.

If it crashes, try a different known good screen.

If not, connect the screen with home button and repeat test.

Next is the front cam flat cable.

Isolate which part of the screen is causing this issue and try a known good replacement. Regarding the home button, it could be the home button itself or the extension cable running in the screen metal plate. And replacing the home button itself will cause the loss of Touch ID.

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Ive tried 3 different screens. 1 with the cam and home cables, the other two without, but I will do it all again to make sure I didn't miss something.

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With a fourth screen it still crashes, no front, back camera, or home cables conneced.

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Just to rule out screens as an issue, are all your screens from the same supplier or batch? You haven't commented on Rany's suggestion of using a known-good replacement part. Perhaps you have but we need to know this definitively.

Can you test those screens on another known-good device? The hardest part with troubleshooting is knowing in advance what is good and what isn't. I highly doubt you would have 4 bad screens but you have to eliminate that possibility outright.

由完成的

I'll test them on another phone. They are from the same supplier, but I've used a few others without issue. Is it possible that the voltage draw of the backlight is causing the problem?

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Sure, low quality screens can have all kinds of unintended effects.

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You can connect the device to iBackupbot and try to see if there is a specific error message that occurs just before the crash. iBackupbot has a real time log section.

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I'll definitely try that!

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By the way, thanks for teaching me just about everything I know. I feel like James Dean just commented on my post.

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