My house is in an area where the digital signal (3G or 4G) is very marginal, one or sometimes 2 bars. The analog signal, however is pretty good 3-4 bars. When my Galaxy S4 tries to stay on the digital signal, often my phone doesn't receive incoming calls, or suddenly a bunch of texts are delivered at once instead of spaced out like they were originally sent. Can someone tell me how to force my phone to use the analog signal only (and how to re-allow the digital signal for when I head into town). Thank you for your time!