On a holiday to Florida for four weeks starting tomorrow, just wondered what the best thing to do is regarding phones etc. I'm taking an iPhone 5 (32GB, Unlocked) and also a Nexus 4 (16GB, Unlocked) and just wanted to know if I'll be able to do what I think I'll be able to do. I'm presuming I'll be able to just walk into a T-Mobile or AT&T store and just buy a pre-paid sim only plan or pay as you go sim and put it into my phone? Only wanting to communicate within the US with the phone so international charges are not a concern. Would prefer to have web usage as well on the iPhone, anyone have any tips?