My galaxy 5 has some weird problems. When I`m at home, it does have signal sometimes but can`t send and receive messages and there are times that there is no signal. But when I go to other areas far from home, it works completely. It`s been 2weeks and I tried all means but it doesn`t really work. My sim isnt definitely the problem cuz I tried to insert it on different phone and it works. Help me please!