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Post: Answer to "No Service after Teardown :/"
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Voters: Taylor Arnicar , originalmachead , rj713
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Shaunt Petrossian @shauntpetr36743

Rep: 85

Question

No Service after Teardown :/

Posted:

I had completed the teardown of the iPhone 4, but now I am stuck with No Service even with an activated ATT SIM card. Does anyone know where I might have messed up in the process? The phone works perfectly except for the fact that it can't make calls or texts because of no service. Thanks.

bushing @bushing

Rep: 10.3k

Answer

Posted:

There is no antenna cable on the iPhone 4; the outer metal band acts as the antenna. The "antenna" is connected to the logic board through the mounting screws!

Check the mounting screws, especially the ones near the battery connector (that's where the GSM radio is). If any are missing, replace them; if not, you might try tightening them if they are loose ... or loosening them if they are tight! (The tightness of the screws can slightly change the tuning of the circuit.)

Does WiFi / Bluetooth work?