T-Mobile remains at $0. YES!
I love it when AT&T and Verizon call me trying to woo me to their 'services.' The services they excel at are kicking themselves in the face. Have now been 5 years with T-Mobile, and while there is room for improvement, they have improved significantly since prior account in the 90's and subsequent experiences with Sprint and AT&T. This $20 fee is almost reminiscent of the misguided policy of only offered the best price to new customers with existing customers completing the 2 year contract had to sign another, but at higher prices even without a new phone - paying you to go to their competitor for the new customer price. Staying with T-Mobile as just returned from a month in Europe and didn't have to buy a useage plan for text and data. Great to power an app, like the Swiss train system, and get realtime data anywhere using the local cellular provider for free.