Hello all, I have the original iPhone and my friend just bought the iPhone 3GS. He's going to sell me his iPhone 3G and I'll unlock it for use with T-Mobile. I have a question regarding the signal strength, will I see an improvement with the iPhone 3G signal-wise as the cover is entirely plastic?? I remember when the iPhone 3G was first announced Apple made mention of a better signal because of the plastic cover. Anyone on here have T-Mobile and upgraded from the original iPhone to the 3G as I am?