What's the number for t-mobile to text to see how much credit you have left?

[HelloTheree1]

I bought a new phone recently -htc cha cha,and i want to check how many texts and minutes i have left,what's the number to text to see?:- )

 

[Etrius]

Text Usage is:
#674#
(Dial this number, then hit call, a dialog bow will pop up with the info)

Minute remaining is:
#646#
(enter the same way as before)

Make sure to include the # symbols before and after as shown above