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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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after changing LCD no service now

Any idea?

Could the fault comes from a screw/contact problem?

thx.

Answered! View the answer I have this problem too

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By "service" do you mean cell service, wi-fi or both?

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only cell service, wifi is ok.

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I found the fault. The little blue coil isnt soldered.

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Check out this step on the cellular antenna guide. Make sure this cable is connected correctly.

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thanks. I thought this is only for wifi? Isn't it?

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That antenna called out above is for cell service. The wifi antenna for the GSM iPhone 4 is actually the metal faceplate which goes over the connectors near the top of the phone. Apple switched to a different design for the wifi antenna on the CDMA iPhone 4 and iPhone 4S.

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