Weird thing... My Iphone's been fine for the past 3 months or so, and now all of a sudden it gets into a funk and cannot take any call in 3G mode... I get a ring, pick up, it drops the call... then if I call back: Call failed... Ad nauseam... I turn off 3G, bam, 30 seconds later I'm good to make and get calls under Edge... My wife has the same phone, is next to me, she gets calls no problem... If I turn the phone off and reboot it, it seems OK again, for a while (duration to be determined)... Ideas ? I mean, it pretty much excludes network if my wife's phone is OK. And since it just started a few days ago, I don't think it's hardware, also because ironically, 3G data works fine at the same time that I can't make a call, I can download apps, web pages no problem at all !!!!