The funny thing is after AT&T chimed in, they were blasted by people saying their services sucks and they are just as worse and need to release 10.2.1.
Yup, AT&T is tweeting me to change too and I replied "no 10.2.1 and no Z30 so what kind of upgrade will I be getting to justify the extra monthly payments?". I am fed up with T-Mobile and AT&T does have better coverage where we live. Having said that, I don't want to switch to a carrier just because of a knee jerk reaction. I have until the end of the year to decide. I have no problems buying a phone from EBay etc and using it on Tmobile. Did that with daughter's Z10 and my previous Bold 9900.