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第四代iPhone。维修过程直观易懂,但前置玻璃和LCD面板无法分开,只能作为同一零件更换。GSM版本, 8, 16, or 32 GB 容量 / 型号 A1332 / 黑色或白色

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No service, low signal after replacing backplate

I bought a rear plate, i repleaced it carefully as mentioned, but after that, my internet is gone, low signal, or even no service. I put back the original one, but the problem is still on. :( I was very careful.

Thanks

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There is an antenna behind that backplate, check if you have damaged it as its very fragile

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What you mean behind? On the other side of the backplate, or on the iPhone's back? I checked the everything, but everythings seems to be ok, but as i said, i was really careful and not playing any parts of it just changed, but after changed back its still bad:S

完成的

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the service sticker attached to the speaker unit has a small diode that needs to be reconnected.

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reconnected to the motherboard.

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