We picked up a G5 for a reasonable price on Craigs List.
Of note… the battery is removable and this device came with a spare batt + charging casket. The battery charger doubles as a USB source… so it looks like we will be set for longer flights.
The phone is USB-C and I got it up and running in less than 10 minutes with an AT&T Straight Talk uSim.
This model also takes a 2TB SD… which I much prefer to on-board memory.
Now… to root it as fast as possible, scrub off that AT&T trash, and get back to what the phone should be. Pure, Simple, Android.