Whats the best way to port out and port in again on the same network?
I'm with T-Mobile but want to get a new sim only deal rather than upgrade so I can get the Quidco on the new sim. Anyway, I need to port my number out so I can bring it in again. If I port it say to an O2 PAYG sim, can I port it out immediately? Do I need to top up before porting out? Whats the best way of doing this? Thanks.