Eldermike - Isn't your cell phone a little thin to lift a wheel off the ground?
Actually, that's great advice! I always carry a bottle jack, as well . . . just in case. Had to use it once on my old trailer. Set it on a couple of wood blocks (that I carry for additional height under my tongue jack) and jacked up the trailer by the frame. Haven't had to use it to change a tire on the Eagle - yet. I did use it to get the trailer off the hitch-ball, once, when I'd bent the electric tongue jack and had to replace it. (It's a long story, so don't ask