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.

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Weak GPS Signal Signal

Hello Everybody

I have a great problem with my iPhone 4.

I have it complet teardown and change the screen to a White One.

After rebuild, all working fine.

But the GPS Signal strengt is false, in Navigon the GPS Signal is "blinking" Signal ON OFF in one Second.

The GPS Accurancy is 65m an i have no solution, i have change all Screws, Emi Shield and Antennas, but i have no Solution.

Thank for our help.

Regards Patrik

Sorry for my bad english :D


Answered! View the answer I have this problem too

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I had this problem with my phone, but in my case the issue were the solder joints in the motherboard (PCB). I took it off and put in the oven for 7 minutes at 190 C, then, my GPS started workin' great(the oven's heat can melt and fix cracks in it).

But in your case, as the GPS was fine before disassembling it, my guess is that should be something connected wrong. You changed the screws, but did you put then in the right place? You can't exchange them, every screw has your own place. Check the Wifi/GPS antenna connection (close to the battery connector) too, maybe it's not well fixed. At the top cover of the phone are five screws, the 1.4mm Phillips (step 7 - has a nut under it that use to fall when we make some movements with the mainboard. If that happens, the contact between the screw and the PCB is lost. Try to check it too.

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I had this problem with my phone,

If you use your phone in the car so:

it may just be the frequency of the FM transmitter and not the device itself.

Try to changed the FM transmitter frequency and everything will work like a charm

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How to change the frequency of FM transmitter??


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Check the top screw contact washer.

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Patrik Laube will be eternally grateful.
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