I will definitely be shopping more carefully the next time I purchase a phone. I have an AT&T iphone 4. It works well, I have good coverage, and it can be use

I will definitely be shopping more carefully the next time I purchase a phone. I have an AT&T iphone 4. It works well, I have good coverage, and it can be used internationally, but AT&T will never unlock a phone, even after your contract is up, or if you are traveling overseas. I was in Europe for a week, and as soon as the phone connects, I get a text from AT&T saying that the data rate is $19.97/MB! Data was off, because I knew it would be a rip-off, but I had not guessed to what extent.