I got AT&T to switch my iphone plan to an ipad plan. I took the sim out of my new ipad mini and put it in my 4s, thus creating a data only iphone. With my corporate discount, I end up paying $24/ month for 3gb of data. Awesome! I use google voice and talkatone and also Skype. However, sometimes when I'm in my car, Skype n Talkatone are pretty bad over 4g. I'd love to see if LTE would make a difference on an iPhone 5. But, I read that LTE doesn't work using an ipad sim in an iPhone 5. Any updates/solutions on this? I'd love to buy a 5 for better voip service.