How can I get better reception on my Verizon iPhone 4?

Hi. I got the Verizon iPhone about 2 weeks ago and I don't have the best reception at my house. I can't even text or call. Sometimes I'll get a couple text, but I really wanna be able to text all the time. And please don't bother saying put it up to a window because it's a waste. I do get service when I put it up to a window but I don't wanna be going back and fourth. And I can't really get a network booster because my dad said it's stupid. We are barely home. I am home all the time. I just wanted to know if there is an app or something i could do to get better reception. Thanks for the help! :)