I only get 3 bars of signal on my AT&T iPhone 4 in Downtown San Diego, California. And so I'm frustrated and not happy. So with iPhone 4s, does this mean my signal will get better just because of the iPhone 4s hardware? I have unlimited data on AT&T, if I upgrade to iPhone 4s, will I be able to keep my unlimited data?
Being able to do voice and data simultaneously is great and I thought with iPhone 4s, we'll be able to do that on Verizon and/or Sprint? I use this feature a lot so this is definitely a good point on whether I should stay with AT&T or switch. Any help or suggestions will be greatly appreciated. Thanks.
https://forums.macrumors.com/threads/1239243/