Can I use a 64K SIM card in a Sony Ericsson T610 (T-Mobile, unlocked, using Cingular service)?”
I also went from T-mobile to Cingular, I like it alot better and get better service. But I had to upgrade my sim card when I changed, which I also went from one blackberry to another and didn’t have the data on my first black berry. The minimum size SIM card should be listed in the user manual, but I recommend going ahead and getting a better SIM card, it’s made a real different with my phone. Sources: In my opinion, the sim card will matter much unless you’re using a data plan.
