To just have a mobile, but not a lot of minutes, you can have a T-Mobile prepaid, and pay about $8.33/mo. ($25 refill card every 90 days).
Not true. After you paid $100 to t-mobile, any deposit lasts for 1 year. I just made $10 deposit to them, I expect it will cover my cell phone needs for 3-4 month. So it's about $2-3 per month only. -- »www.callwithus.com