I have terrible cell phone service in my house ever since we put a metal roof on the house a few years back. We have our phones set up to make and receive phone calls via our computer wifi. Once we go outside or to other areas, the regular cell service automatically kicks in. So, if you will have a computer with a router at your new place, you can connect via wifi.
I used their car-mounted amps for service from my camper van. It didn't always give me service, but would usually provide a few bars increase. If you really have no service, these wouldn't help, but they can boost a faint signal.