Hello everyone. My mother passed away last month (cancer). One of the things I need to do is transfer the cell phone and the number over to myself. We have shared the same phone for years, and I need to keep the number so that important contacts can still reach me during this complicated period. I signed up for my own account on Wednesday, with a SIM card. So I'm able to use our Galaxy S II X on my own account by swapping SIM cards. The next step is to change the number on my mother's Self Serve, then log in to my account and grab the old phone number. What I need to know is: How long after changing numbers on my mother's account will the old number be available? Will the number stay locked for a while before being available to other customers? Is it possible that someone else will obtain the number?