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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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GSM connection issues after battery replacement

Hello everybody!

I recently repaired my broken/constantly depleting iPhone 4 battery using this iPhone 4 Battery Replacement instruction. After exchanging the parts and not touching anything with my bare hands I reassembled the device. Afterwards I had a pretty bad reception but it was manageable.

Following the tip to degrease the connecting parts with a degreaser such as Windex, I got my self a window cleaner, sprayed it on a towel made sure it is just a little bit wet and swiped it over the connection points (of the pressure contact). Now I don't have any reception.

Is there anything else I can try to improve my reception. Did I use to few of the degreaser or is it possible that it left some "protective" coat on top of the metal. If so is there a possibility to get it off?

I didn't touch anything else. Wifi and GPS works fine.

I hope you can give me some advise!

Answered! View the answer I have this problem too

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Hi- Great to know you solved this on your own, but please copy and paste that update to an answer instead of an edit. Then accept it so we can see that's the answer and it is marked as such.

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Since this is my own question, I cannot answer it. Sorry. It says:

"This is your own question, leave a comment to respond to other users."

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jpcg, all you have to do is cut and past your comment into the answer box and submit. after that the Action should allow you to accept

your own resolution. Good Job.

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Oldturkey, it looks as though he is correct, because he posted the question, he can't post an answer, only leave a comment. Hence why I copied and pasted his edit.

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Sorry Mike, I did not know that. In the past, we were able to do it. See not charging after battery replacement for my own. Has this changed with any of the recent edits to the software? How would jpcg achieve his Researcher Badge ;-) ?

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Solved the problem.. I did touch something else. I accidentally removed lower antenna connector up off its socket on the logic board when I removed the battery. It stayed in place but it was really loose. Now it's back on and I have full signal strength again. :) See Step 11 here iPhone 4 Logic Board Replacement

I cleaned everything with cleaning-benzine and gloves to make sure its completely degreased.

Hope this helps someone if he encounters the problem. If the problem persists one should also check the really small blue inductor that is on the left side of it (hidden under the logic board cable) but of course there is more on that in other threads.

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jpcg will be eternally grateful.
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