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Revamped version of the iPhone 3G with faster processing speeds. Repair of this device is similar to the 3G, and requires simple screwdrivers and prying tools. Model A1303 / 16 or 32 GB capacity / black or white plastic back.

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wifi wont work after replacing battery

Just replaced the battery on my wife's 3GS.

Whats happening:

(1) Wifi won't recognize the network unless you are standing right next to the router.

(2) When wifi is on, the cell bars drop

What Did I check / Try:

(1) Disassembled and reassembled twice more

(2) Verified coax connectors #6 & #7 are undamaged and well seated

(3) Verified copper tabs making solid contact with bezel

The only thing I can suspect is that I probably didn't do a full shutdown before the first replacement attempt

One more bit of info, probably unrelated, but may be a hint to someone. Before I even tried to perform this operation my wife has been reporting a noise from within the device, when turned off! When I have it open I see that the vibrator keep spinning in low speed.

Thanks!

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Connector #6 in not connected correctly. This is a difficult one to get perfect. It is much easier if you loosen the screw that is present in the middle of Flex #6. You must look sideways from all angles to be sure you have it just right, then carefully press it perfectly into place. Then tighten the screw. Before opening and during all repairs of iPhone 3GS make sure the iPhone is OFF.

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Verified connector #6 again, this time reinstalling with loosening the screw on the flex cable.  Same results.

I was wondering if I could have damaged anything wifi related when prying off the battery itself.

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I had same issue but after reopening I found #6 wasn't fit in properly. It seemed to be ok but it really wasn't. After it snapped into place, everything works fine

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