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Repair guides and support for the Huawei P9 Lite, released in April 2016.

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Reboot loop after replacing Display

I replaced the broken screen on my Huawei P9 Lite, everything went fine, the display is working.

Problem is the device is stuck in reboot loop now. It restarts as soon as de Huawei Logo appears. I already tried launching into EMUI and made a factory reset - didn't help.

I don't understand what could have caused the issue?

Thanks for your help!

Answered! View the answer I have this problem too

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Chosen Solution

The back facing camera was the problem. I detached all flat cables and tried attaching them one by one. As soon as i attached the back camera the device wouldn't restart though.

I'm still wondering what is wrong with it, or how I damaged It while replacing the screen but at least I know what was the problem.

Thanks a ton richard for your help!

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Most Helpful Answer

have you tried the old screen? if old screen allows normal boot, problem is with lcd or digi IC on the new part.

Update (01/26/2017)

if you have access to a microscope id check for any parts that have come off the board. if you have another board to compare with it would be good. i suppose you could try to flash the phone with a rom and see if that makes any difference.

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hi, thanks for your answer, i just tried the old screen as you suggested. but the problem also exists with the old screen. any further ideas?

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what is your battery voltage? and are you sure the power button is working properly?

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the battery voltage is 4.4V as far is i can tell (the NFC sticker is glued to the battery). i'm sure the power button is working correctly as i can power the device on and off as well as access the factory reset menu etc.

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I have same problem without mean camera the device working but with camera boot loop help pleassssss

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my p9 lite it just go on and off itself i dont know anyone help plz?

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Hi all,

I have substituted the display and the battery of my P9 lite and got the same problem: the phone turns on and is stuck in the Emui recovery mode where three options appear.

  1. Reboot system now
  2. Wipe data/factory reset
  3. Wipe cache partition

Nothing changes even after trying all three options. It just comes back to this screen.

I will try to pin point the problem to see if it's the battery or the screen or the camera (??)

. I'll let you know as soon as I can.

However, if the problem is the camera can someone explain why?? And how to fix it ?

Thank you everyone.

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Sebastian Marschall will be eternally grateful.
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