Thanks, I'm not in the extended area , it shows a couple of 'spots' near me , maybe 1 or 2 miles away but I was thinking that maybe it would help my 3G signal, or hoping it would.
Will Verizon readily swap out the card or will I have to stomp my feet for them to do so? I'm still within my 14 day window
I don't know if a new SIM will do much to improve 3G reception since 3G is still over CDMA. The SIM is there for authenticating the account and LTE. I'm not 100% sure of its impact on 3G one way or another though. It wouldn't hurt to try. If you tell Verizon that you're having connection issues, they shouldn't put up much of a fuss over giving you a new SIM (they really shouldn't be hesitant to do it all), especially since you're still within the 14 day window and could easily return the phone if they don't.
Is your current 3G signal with the S3 weaker than the 3G signal you received at home with your previous phone?