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iPhone 5s No Service/Line Searching iTunes ERROR -1

Hye I got n IPhone 5s sent in to me for repair. The customer claim that his IPhone having a No Service issue, and after restore iTunes got an error -1.

So my question is should I reball the BB CPU first ? After reball, what should I do if the problem not solved ? Cuz I read some thread on the internet saying that error -1 is not only because of BB CPU, some of them said its because of BB PMIC. How should I know which one is the right solution ??

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do you get the imei when you dial *#06#

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How can I get the imei number if the phone are stuck in itunes logo

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it doesnt say in your question that its stuck on connect to itunes, try using 3utools to kick it off recovery or if that doesnt work try flashing the ipsw

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lol. this is not a software issue, this is hardware bro. im pretty sure its hardware

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If it's stuck in a iTunes recovery logo loop at least try to exit recovery mode via 3uTools.

It probably can still boot up if it didn't start flashing the firmware on there yet.

Then you can check what he said in the comments.

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1 Solução

Error -1 may be caused by connection problem, network connection or hardware issue.

About hardware problem, probably check the baseband.

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