My iPhone 3Gs keeps losing signal after iOS5
Hey guys,
I need help on my iPhone 3Gs. After getting the iOS5, it keeps losing signal. When I say losing signal, every 5 seconds it finds signal, then changes to "Searching" then 2 seconds after changes to "No Signal" then two more seconds after "Searching" again then it finds signal and keeps it for 5 seconds at max then repeats the cycle. I have not dropped my phone or damaged it in anyway, it just started happening a day after i recently updated. It's not also where I am because all my friends with either iPhone 4S all the way to iPhone 3G constantly keep their signal at atleast 3 bars.
Thanks in advance !
iPhone 3GS, iOS 5