My S4 gets little to no signal at home. I have been to the Verizon store numerous times, day on the phone with technicians for hours, to no avail. I have switched SIM cards three times, still nothing. My old Motorola worked fine at my house, but the Samsung goes to 1x when I am at home. Retail store had given me the ultimate run around and refuses to give me new phone. I've been a customer for years and they will not help me. So frustrated. Amy ideas or help???