Hey guys, I been trying to reboot this Galaxy s4 clone, Android GT-T9500. I been trying to hard reset everything back into like an original galaxy s4. The phone it self can't make any calls, it can do text messaging bot receive and send text messaging. It can receive calls. But it can't dial out and every time I try to dial out it says "network busy". Anyone know how to do a hard reset or do something about a phone that has a problem like this one?