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苹果官方于2015年9月25日正式发售iPhone6S A1688/A1633机型。 此机型的修理方式与先前几代差不多, 需要螺丝起子及撬棍工具。 同时也适用GSM or CDMA/16, 64 or 123 GB/ 银色, 金色, 深空灰色, 玫瑰金色等机型。

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Network seems to be locked after upgrade to iOS 12

My 6S stopped working after upgrading to iOS 12.

Currently, it will operate normally WITHOUT the SIM card inserted. But when a SIM card is inserted, a notification pops said “Activation Required”. Tap “Dismiss”, and it will continue to “Hello” screen (like the first time it turned on), a moment later it’ll switch to home screen, without any cell reception, and pops another “Activation Required”, and repeat the whole thing mentioned.

I tried reverting to iOS 11.4, but as I write this, it still no result.

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You may want to speak with your cellular service provider about this situation. I doubt it is hardware related so I think that might be your best option at the moment.

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After repeated SIM in and out, there are some occurences where the phone connects to cellular network, but a moment later it reverts back to “No service” and the loop starts again.

The thing is, it worked normally before iOS 12. It was not a contracted unit or such, and I use the very same SIM card.

I tried different SIM cards from different providers and ended up the same.

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Andi Huang 将永远感激不已
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