Att has good service in my experience.When AIO started advertising, we went to upgrade our basic telephones to smart phones. I was not happy with what was offered, because I am going overseas and it would not do what I thought I wanted. But my husband decided to change to AIO. For over a week, every 15 mintues the phone whistled at him. We tried all kinds of alarm settings, nothing would turn it off. He took the phone back 3 times and no one could figure it out. When he checked his usage, even though it was unlimited, there were several 100 "calls". He makes phone calls only, no texts no internet, nothing. When he asked what they were and from who, the response was don't worry, it's unlimited, so no charge. Corporate customer service called several times and had no idea what the whistle was. Finally they replaced the phone. The people in the store were useless, very little English, and had no idea what they were selling. I went back to ATT, where I have been for 15 years, explained what I wanted and that I had been advised to buy the Samsung Galaxy, they suggested another, less expensive phone and it does everything I want. $20/month more, but I'm happy!
From the desk of Hiss Excellency.