Just bought an iPad 2 and have 3g service with it. Just bought 4g mobile hot spot from AT&T also ($50.00 per mo.) and was wondering what the benefits of 4g are? I watch movies with my iPad, check e-mail, surf the net, Skype and that's about it. Seems like 3g works pretty well. I may be returning the 4g device to AT&T since it's within my 14 days. Thanks for the responses.