My daughter bought a Samsung Galaxy Tag SCH 1800, it was second hand. As we looked at it it looked great, we played with it for awhile before we purchased it. It worked fine. We brought it home and noticed there was a lot of extra stuff, so we tried a factory reset. I pushed the power button & the up volume, just like the manual said. I made the correct selection It would try to make a call to activate and it would tell me it couldn't We repeated the activation several times, unsuccessfully Now the screen shows a white triangle and a green android. HELP PLEASE.. She saved alot of money for this and now its dead. She bought it to help her little sister stay busy when we attend her robotics competition next week. How do I fix this, PLEASE!!