I've had att for about 15 years and am currently on the unlimited grandfather plan. Right now my bill is about $85/month. I just saw a commercial/ad for T-Mobile unlimited plan called "T-Mobile one". According to this plan, EVERYTHING is unlimited( talk, text data). My parents and sister currently have Verizon and on a family plan. They are paying about $200/month, with my sister the only one with unlimited data (grandfather plan). We live in SF and was wondering if anyone that has T-Mobile, how's the reception and customer service? The T-Mobile One plan would be about $180/month for 4 lines. Is it worth it for me to give up my grandfather plan with att and switch to T-Mobile?