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2017년 9월 22일 출시. Model A1864, A1897. GSM 또는 CDMA / 64 또는 256 GB / 금색, 은색 및 스페이스 그레이.

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I need to know which hardware receives sim network signal in iPhone 8+

I need to know which hardware receives sim network signal in iphone 8 plus because I tried replacing back glass and now network keeps searching but no network. and while i was replacing back glass it, i broke a part which was in between back camera and its flash light. does it some where related to sim network or do i need to check something else. any input highly appreciated. Thank you. or ask me again if you want to explain it more.

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

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If you had to replace the back housing I would think the iPhone took a bad hit and it would be quite likely the issue was already there before replacement and/or the handling of the board made the damage just evident. No service flag with request to update is typical of a hardware damage to the logic board where the processor can’t find the baseband. It could be due to a number of components and will require deep microsoldering skills to be fixed. The only thing you can try is a DFU restore, but there are serious risks it won’t complete and phone will be stuck in restore mode until fixed.

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The SIM socket is located on the logic board as marked here in Purple

Block Image

You need a SIM held within it to tell the radio what bands your cellular carrier uses and can identify your phone.

If your SIM socket is damaged and/or the cellular radio logic is damaged as well as the connections to the antenna units then you can encounter inability to connect to the network.

Breaking parts is always a bad sign. Post a clear picture showing the damage and leverage the pictures within the iFixit teardown iPhone 8 Plus Teardown 분해 to identify the broken part/s so we can see more clearly what you are facing post a marked up picture as well 기존 질문에 이미지 추가하기

iFixit 이미지

안내서

기존 질문에 이미지 추가하기

난이도:

아주 쉬움

2 - 5 minutes

iPhone 8 Plus 이미지

안내서

iPhone 8 Plus Teardown 분해

난이도:

운영

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hello thanks fr ur reply., it says "mobile data update failed".

your iphone cannot make and receive calls or access mobile data until it has updated

Can you identify the part you broke - Picture please

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Try these steps:

  • Turning off Wi-Fi calling and Voice LTE may fix the problem
  • Open Settings and tap Cellular -> Wi-Fi Calling. Turn off the switch next to Wi-Fi Calling on This iPhone to turn off Wi-Fi Calling and go to Settings -> Cellular and tap Cellular Data Options. Tap Enable LTE -> Data Only to turn off Voice LTE. You’ll know Voice LTE is off when the blue checkmark appears next to Data Only.
  • Turn Airplane Mode Off And Back On
  • Turn Cellular Data Off And Back On
  • Check For A Carrier Settings Update open Settings and tap About to check for a carrier settings update. If an update is available, a pop-up will appear within about ten seconds.
  • Eject your Sim Card and Turn off Your Phone Once the device has been powered down reinsert the SIM and then power the device back up.
  • Reset Your iPhone’s Network Settings
  • Put Your iPhone In DFU Mode

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thank you, brother, for your reply, but i replaced the back glass myself and then it turned like this. and i settings about and in the carrier it says "no carrier" I tried all the above but still no use. do you think logic board has the problem?

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i aleady change all housing body and now i have very low signal sometimes it says no service sometimes work good i open the iphone and hold with finger in the simcard socket and now works better but again i have sometimes problem i dont know what to do .

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