HOW to have a cellphone signal inside my house?

I think the problem with the network. So the problem is your sim company. But Nokia give best network connection. so if you face such a problem then you can try Nokia cell phone. But before change your cell phone you open your battery of mobile and again put it on mobile. May be the problem will be solved. :)

If other people in your house has signal in their cellphone the problem is in your cellphone, try to borrow battery and try to insert it to your cellphone if you have a signal it means the problem is in your cell battery but if still no signal you need to bring your cellphone to the cellshop.

you have to open your house so that the signal can come and go out.. hehe or go to the elevated place of your home and get a signal there....