I have a brand-new, never opened Samsung Galaxy S2. The phone has great reviews and has 4G. You'll get the whole new package with a charger and a blue case if you want it for an extra $10

The only reason that I'm not using it is because I'm canceling my contract with T-mobile

It's available for pick-up in Palo Alto/Stanford/Menlo Park or I can drive it to anywhere in the bay area for an extra $20.