Why does my iPhone reboot randomly after reassembly?

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iPhone 5s

苹果 iPhone 5s 于2013年9月10日公布。该设备的维修与以前的型号相似，需要螺丝刀和撬棒。可使用GSM或CDMA / 16、32或64 GB。颜色有银色、金色和太空灰。

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Ali Sadykov @as2019

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发帖于: 2019年9月13日

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Why does my iPhone reboot randomly after reassembly?

Hello!

About an hour ago I reassembled an iPhone 5s with a new Logic Board (that I previously bought from Ali Express) and used some parts from an iCloud Locked iPhone (which should be fine as the parts are all original). However, after reassembling the phone it boot perfectly fine to an iOS but after a few minutes/ hours (of a normal use) the phone reboots. Is it something that I did wrong while connecting things? Do you think I did something that would short out the logic board which causes all this reboot problem? How do i solve this problem?

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By the way, the phone works (it loads the OS and you can even call from it, take pictures, etc. but then it just ¨dies¨ reboots)

由 Ali Sadykov 完成的 2019年9月13日

@as2019 And just so participants here get a clearer picture of the problem you are encountering, what exact procedures have you implemented on your own to rectify this situation you are dealing with? For example, have you taken the phone apart several times to find out where some re-installation omissions have occurred? Have you doubled checked during the subsequent disassembly and reassembly for component misalignment or misunderstanding of what exactly are the requirements required for specific components etc? Provide such details and maybe participants here will be clearer on the points that enable them to help you with over coming your problems.

由 prop man 完成的 2019年9月13日

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Bill @kingdasher

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Hi

The best think to do is to test the logic board you got from Ali Express

With the logic board removed from the casing connect an know good LCD and power it up with a know good battery or an externel battery

You need a know good dock charging connected has well to do a promp to boot

See if then you have the same issue

Good look

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Well, I think it's best to tell now (after a very long time trying to fix that thing) that the logic board they sold me was a terrible one, I kinda understood that those a-holes scammed me, since the whole logic board was worked on before. I opened the board's lids to see that they reflowed everything, starting from the CPU ending, I guess to bypass Icloud lock, and ending with the NAND chip. After checking the serial number I also understood that the system originally came with 16 gigs but they added a 64GB NAND just to sell it off to idiots like me haha. Well, anyways, I got lucky and bought another iphone 5s of another person for only 15 Euros, so at least I got that deal right :)

由 Ali Sadykov 完成的 2021年5月23日

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By the way, the phone works (it loads the OS and you can even call from it, take pictures, etc. but then it just ¨dies¨ reboots) — Ali Sadykov
@as2019 And just so participants here get a clearer picture of the problem you are encountering, what exact procedures have you implemented on your own to rectify this situation you are dealing with? For example, have you taken the phone apart several times to find out where some re-installation omissions have occurred? Have you doubled checked during the subsequent disassembly and reassembly for component misalignment or misunderstanding of what exactly are the requirements required for specific components etc? Provide such details and maybe participants here will be clearer on the points that enable them to help you with over coming your problems. — prop man
Well, I think it's best to tell now (after a very long time trying to fix that thing) that the logic board they sold me was a terrible one, I kinda understood that those a-holes scammed me, since the whole logic board was worked on before. I opened the board's lids to see that they reflowed everything, starting from the CPU ending, I guess to bypass Icloud lock, and ending with the NAND chip. After checking the serial number I also understood that the system originally came with 16 gigs but they added a 64GB NAND just to sell it off to idiots like me haha. Well, anyways, I got lucky and bought another iphone 5s of another person for only 15 Euros, so at least I got that deal right :) — Ali Sadykov

iPhone 5s

Why does my iPhone reboot randomly after reassembly?

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