Repair information and guides for the fifth generation of iPhone. Model: A1387

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Changed my glass and and bad signal

I recently broke the back glass to my iPhone and decided to change the front and back to blue. Everything was pretty simple and works great except for my reception. It fluctuates really bad. I can have full bars and 3G service for a good amount of time and then it'll diminish slowly or instantly go to no service. Not having service can last for a few seconds up to over and hour. Then it'll instantly go back to full 3G service. What is going on?

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Maybe your cellular antenna is not perfectly connected. You can try to disconnect and reconnect it : it's the small connector on a black cable near the battery connector.

Step 12 of the display assembly guide : iPhone 4S Screen Replacement

Also degrease the pressure contact with windex to avoid interferences


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