So my dad lives in Fl. during the winter... He just flew back there the other day and his phone was working fine... then he walks into the house and suddenly his iphone wont work in the house... it says call failed everytime he tries to makes a call and just sends a caller to voicemail. So he called me and I asked how many bars he had and he said 4 so i told him to leave the house and go by the road and make a call... he did and it worked fine... went back to the house and once again nothing... is there anything in his house that could be causing his signal to get scrambled and be the culprit behind something like this??? thanks!