"mobile data update failed"
hello my mobile iphone 8 plus says "mobile data update failed".
your iphone cannot make and receive calls or access mobile data until it has updated.
anyone any suggestions please.
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.
The SIM socket is located on the logic board as marked here in Purple
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の分解 to identify the broken part/s so we can see more clearly what you are facing post a marked up picture as well iFixitでの質問に画像を追加する方法
Try these steps:
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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