When I sectioned Georgia, not having a phone wasn’t an option for me either. You might say it was my most important piece of equipment - if I didn’t have it I couldn’t hike.
Here’s a strategy that worked for me: Set up a time period each day when you will try to call, say between 1 - 3 PM every day. That will put you out on the Trail, probably somewhere on a ridge, and the person you’re calling won’t be at lunch. Forget about gaps or valleys, if you’re in one just keep walking. When you get to a ridge or atop a mountain turn on the phone and monitor the signal. When you get a strong signal, follow it to a secluded spot and make the call. Worked every time, but Georgia has a lot of small towns near the Trail. My batteries easily lasted a week, but after 20 years of marriage our phone calls are pretty brief: “I’m ok, still on schedule, weather is the usual, luv u2, bye.”
One phone call was made below the ridge south of Woody Gap looking down a huge valley toward Dahlonega, I could see Spring and I was standing on it! There was a clear line of elevation where all the trees had leafed out below and all the trees above were still bare. Spring was working it’s way up the mountains and it had come exactly to the Appalachian Trail. I got a good signal and called my wife and tried to describe what I was seeing. Then, while I was talking, I took a picture to show her later. Another time after a big storm with tornados blew through, the quick call home kept her from worrying.
If I was thru hiking, I’d bounce the charger ahead. I used one of those pre-paid plans, TracFone, and had no problem with service.
Dances with Mice