I cannot receive incoming calls on my samsung galaxy exhibit cell phone inside of my home however.., i can make outgoing calls & when i go outside.., i can receive incoming calls !!!
What is your cell signal like inside the house? Do you have plenty of bars, or only one or even zero? Depending on your location or the construction of your house, your signal may be lousy, in which case you may not be able to receive calls inside your house. In situations like this, sometimes you may still be able to make a call yourself.
Do you have T-Mobile? If so, you could try calling them and requesting a signal booster.