Perhaps this isn't the right forum, but ever since I got an iPhone 6 and switched to T-Mobile I'm dropping calls constantly. And this is in major urban areas (Dallas and Ft Myers) where I have lots of bars. I know Tmo has a reputation for bad coverage, but I don't think it's a coverage issue. Could it be something with the new phone, or IOS? I did have T-Mobile years ago before I switched to AT&T and never had this issue. Just wondering if anybody else is experiencing this.