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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No antenna Service after opening iPhone

does anyone know where the antenna is on the iPhone 3GS, broke my screen and when i was changing it i took the board and battery out to look it it all, and know im getting no service, any ideas?

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you must have disconnected the antenna. its in the upper left corner.

see the diagram and the logic board in the teardown.

step 11:

iPhone 3GS Teardown

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I also have the same problem, everything reconnected but 3G no service most of the time or just 1 bar of non-3G connection. WiFi is ok though

Update

Ok that was stupid, the antenna on the bottom right hand corner disconnected when I swear it was on properly I believe this was item labeled 7 so I have my full bars and 3G connection now!

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I replaced my iphone speaker assembly with dock connector today and again am rarely getting a 3G connection but ok'ish gsm connection. Everything seems ok so I have a feeling its to do with the contacts as rodbuster55 mentions not touching the right parts.

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hi,

in my case both antennas (bottom right und up left) are connected. WLAN is ok, but GSM/UMTS is bad....any idea?

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Having the same problem... Any solution yet?

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Can anyone advise how to reconnect the antenna?

I replaced the battery and now have "no signal" and cannot see how to reconnect the antenna?

Is it under location 7 - the "do not remove" paper?

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I had the same problem after installing a larger battery.

Re-installed the previous battery and took it back to the Apple store. They advised it was a modem problem and replaced the iPhone.

Be sure to replace the "do not remove" paper and don't leave any trace of opening the iPhone.

Also, when replacing the battery, ensure number 7 is secure and ensure the two metal tips sticking up (near number 7) are touching the side casing.

Be very careful when removing the board and putting it back.

I was extremely careful when doing the battery replacement but didn't view those two tips when removing the board. Before removing, check to see where the two tips are touching.

Anyone with further experience?

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I have the same problem with my 3GS after replacement of the battery, now just goes from Full service to then sometimes NO Service to Searching for service..... I have checked all connectors and even traced with a Multi-meter the contacts between the GSM/ UTMS antenna and everything is fine. Anyone know what the problem could be? There are NO cracks or missing components e.g. RF inductors or other parts missing. Anyone have an idea?

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I have this same problem. I'm not sure where those two gold points are supposed to touch. They came out when I pried on up on the bezel too far. Can anyone help?

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Taken a look at this. I found this online, but haven't had time to check it out.

http://cybermog.wordpress.com/2010/04/29...

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I have the same problem with my iPhone 3gs. The link shared in there is for iPhone 3G. Has anyone fixed No signal issue with 3GS?

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there is a little spring thingy on the bottom right, just below the do not remove sign. make sure it's well connected...

it kind of clicks when it's in place

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kael will be eternally grateful.
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