I’m at the end of another contract year with One 2 One so I thought it was time to write my thoughts about this much-unloved network. One2One? OK so I know most people have a nickname for 121 such as One2NoOne and it is not the most popular network here at Ciao but I’m still willing ... Read review
One2One is now T-Mobile. You should call T-Mobile from a landline or another mobile. It's worth noting that if you haven't used the sim card for 180 days (roughly 6 months) the credit will have automatically expired. As One2One ceased in 2002, it's unlikely a One2One sim will still have credit.