Pacbell does... all their phones use SIM cards... I had a 6190, 5190, 8290, and a StarTAC 8000, and they all use them... this is in S. California... they're the only one in my area that uses them too... I know that some other provider nationwide uses SIM cards as well, but their name escapes my mind right now. Right now I have an 8290 with the family plan, base plan being $39 for 250 weekdays, free mobile to mobile, and free long distance- I tacked on the incoming free minute for $5 extra, and an extra $10 for 1000 weekend minutes. With the family plan, it was about $12/phone to add an extra line to share the plan, so in total we have 4 phones sharing 250 weekday, 1000 weekend, and free long distance, mobile to mobile, and incoming minute. Now Pacbell has a new plan with free UNLIMITED nights AND weekends, with the option to add on free mobile to mobile for an extra $10, or vice versa. Also, they have free long distance for the plans over $40. This is in the L.A. area.