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Question: Re:Samsung SGH-F480

I have an sgh-f480 via the O2 network, and damaged a cable, which has a spade connector at each end, and subsequently the phone now delivers a very poor reception. I was just wondering if anyone who is in the know can confirm that this cable is indeed the internal booster arial, as this would save me undue expense by aqcuiring a cable that serves no purpose.
ps The reason why I removed the casing was to clean the front screen on the phone as it had specs on which affected the viewing of videos and pics. Many thanks all.