stranded on a back road (trip #4)

so at the end of our trip we were having my aunt pick us up at a parking lot off what we thought was a main road. well to our dismay all of our phones were dying. one piece of advice I will stress here is if u can save your phone battery than do anything you can to save it.
the night before my uncle and I both realized our phones were near dead. my cousin had about 65% battery left so we told her conserve her battery since it would be the only phone we had the next day. so what does she do... decides to check her work schedule online on her phone that night. this completely drained her battery which than left us with no phone the next day. we could only hope that our ride wouldn't get lost picking us up.
so much for hoping. our ride couldn't find the parking lot we were at. so about 2 hours after the last time we were able to call our ride my uncle decided to walk up the road and see if he could figure out where we were. about an hour after he left my cousin and I didn't want to sit still anymore. so we gathered up all three backpacks and started carrying them up the road. I carried my uncle's and my backpack and my cousin carried her pack and all the walking sticks. we walked for about a mile before we finally ran into our uncle who had found our ride and was coming to pick us up. I have never been so happy to see that truck in my life.
so please if you're going out in the woods, try to conserve all of your phone's battery or as much as you can. you never know when there might be an emergency and you definitely don't want to be stranded somewhere you don't know.