I have not been using my number since January since I am out of the country (and will be for a few months more). How many maximum months is a number allowed to be inactive before T-Mobile permanently suspends it and gives it to another user? I'd much rather not have to pay for the number if I'm not there to use it. I want to know if I have to make any payment after certain number of months to keep my account. I had a prepaid account that has now been automatically transferred to a Pay As You Go plan.