Single Point of Failure Apps(keepandroidopen.org)

Two years ago, I bought a secondary phone. It’s a cheap Android phone that always travels with me outside of town. I’ve for the case that my main phone breaks from a fall, fails to boot after an update, gets lost or runs out of battery. The secondary phone has a set of essential apps installed. Simply put, its task is to get me to my next destination and have some hours or days to repair or replace the main phone.