"Worthless GPS"1.0 starson by RoadWarrior66
Pros: Almost full featured Android phone. Nice screen.
Cons: GPS works for only 5-10 minutes then requires phone reboot to work again. Worthless for using Google Nav or Sprint's TeleNav to find your way around. Sprint and Samsung support confirm this issue. No plans to fix it.
Summary: Can't believe the GPS doesn't work! If you don't want or need GPS then it's a decent phone.