>>You can also get balance and expiration by accessing T-Zones and
>>choose the my account link which will show the balance in minutes and
>>in dollars as well as the expiration date.
>
>The T-Zones account balance feature is absolutely worthless. It's been
>nearly a month since I added a $10 card to my account and rolled my
>minutes over for another year and it's still not updated. Their web page
>(https://my.t-mobile.com/) is at least accurate.

I have found that the current activity page on T-Zones (on my
postpaid account) is often out of date (giving an older "As of"
time), but using Refresh in the browser will get new data most of
the time. Calls older than an hour or two but after the "As of"
date will show up, calls newer than that might show up. That figure
of "an hour or two" is my experience for how long it takes for
things to show up; it doesn't include any roaming, tries during the
middle of the night during maintenance, travel very far outside
where I live, etc.

As I recall, the "Bill Summary" page behaved the same way when I was
checking that my first bank-bill-pay payment arrived properly. Don't
believe what it says without refreshing the page if you're expecting
something to change.