Locating Cellular Antenna component for iPhone 3GS

I want to replace the full cellular antenna assembly in my iPhone 3GS. I have located a number of items on ebay but wonder whether they are correct. Can you advise on the correct item? (My problem is with the cellular antenna, not the wi-fi).

Here are three items i found. Do they contain the cellular antenna assembly?

1. New Charge Port Dock Antenna Speaker Mic Assembly for Apple iPhone 3GS

2. Dock Connector Port Charger Flex Cable Ribbon Repair for Apple iPhone 3GS

3. Phone 3GS Complete Dock Connector Assembly Antenna Flex Loudspeaker Port Mic
Michael MurphyAsked:
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AlexiosCommented:
it's the little gold prong on top of motherboard next to battery screws. easily bent when removing motherboard for battery replacements etc.
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Michael MurphyAuthor Commented:
I knew that the prong was the actual antenna, and checked to see whether that was in place, touching the band around the housing, which it is. But I was wondering whether other parts might affect the cellular reception.

 I am getting poor cellular reception. When I switch on the iphone (3GS) it searches and then finds the network and displays almost all the bars, but after ten minutes or so it loses it. In order to find it again I have to switch OFF and then switch ON the iphone (3GS). I can also turn on Airplane Mode and then switch it off and again it searches and finds the network - but after five or ten minutes it loses it - no service.
I know that the prong is connected to the motherboard, but was wondering whether there are any other parts - cables etc - which could be causing this problem.  Is there anything in the 3 items located on Ebay  (see above) which might be involved.

 I bought this phone second-hand. It was locked to O2 UK. I managed to unlock it myself. I am now using an O2 Ireland sim card.
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Kyle DaviesRetail Software SpecialistCommented:
Here is a link that will guide you through taking apart the iPhone and locating everything you can also order parts from them if you need to.
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Michael MurphyAuthor Commented:
thanks Kyle. I cant find the link on your post.
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Kyle DaviesRetail Software SpecialistCommented:
Sorry about that here is the link

http://www.ifixit.com/Device/iPhone
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Michael MurphyAuthor Commented:
Brilliant link. Thank you!
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Kyle DaviesRetail Software SpecialistCommented:
Hi EamonX1 when will you be awarding the points?

Thanks
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AlexiosCommented:
Glad to help
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