I’ve had a T-Mobile USA prepaid number for quite some time. It was a brilliant service — you turn on unlimited calls & data (200MB at high speeds, and then it goes down to 2G speeds) when you’re in town for a mere USD$3/day. If you can live with 2G speeds, it cost USD$2/day. And when you didn’t use it, you just went into a mode that would charge you upon usage.
All this was and still is changeable online on your T-Mobile account. A bonus: add $100 credit, and you’ve got validity for 365 days.
Now, they’ve decided that the moment you go to one of those $2-3 plans, you can’t go back to the old “idle” mode. Now you’re charged a minimum of USD$3/month just to keep your number alive & active. So that’s $36/year to keep your number alive.
I don’t mind the extra charge, but I think its quite dishonest to change existing customers to this. A lot of people praise T-Mobile, but even they falter.