I bought the entry level nokia but I hate it it's too small. I rather have the old school one. Can I just keep the SIM card from this new one and look for a new phone? If you got an old one that works that would rock.
most any carrier if you have a compatible sim card you can swap them back and forth with no issue. I do this with my nextels, i have one i use daily and a few older ones that i charge up the batteries on and swap the sim card into when hunting or fishing with no issues