I got my Nokia 6010 from Cingular back in 2005, and have had it unlocked since (just for fun). I still slip my SIM card in it from time to time just to see if it still works, and it always does ...

This affordable dual-band GSM phone packs in a good number of features for a low-end model, including GPRS high-speed data, Java, MMS, SyncML, and voice dialing.