Blackberry 8320 Curve, a good phone but didn't do a lot of things at all (like going on the internet was a trial, the apps were awful, and other stuff). Before that the Nokia 3555, which was a great little not-smart phone. Really worked well and I am sort of sorry that I was sweet talked out of using it in favor of the Blackberry.
Before that a Nokia 301 which was wonderful. I loved that phone and only gave it up because the battery ended up costing too much to replace.