Hey guys, I've got a iPhone 3GS with firmware 3.1.2 (it's not jailbroken). Since 2 days I'm having signal problems, signal keeps dropping and calls keep dropping while there's no problem with the actual signal because I'm getting full signal strength on my iPhone 4. I've tried restoring my 3GS but it hasn't helped. What do you reckon, will updating to 4.3.2 help solve the problem? I'm waiting for a reply, it's a bit urgent because I need to make calls and receive calls on my 3GS. Cheers.