T-Mobile customers buying apps from the Android Market have only been able to use credit cards for their purchases ... until now.

An update is being silently rolled out to T-Mo customers that will allow app purchases to be added to their T-Mobile bill. The update is being staggered, and should be complete by Dec. 30. And as per the usual, any app deleted within 24 hours will not be charged to your credit card or T-Mobile account.

That's a good option that T-Mobile customers should have had by now. But better late than never.

[T-Mobile via Android and Me]