getting the phone with a wallet of satoshi is the major problem to solve.  Getting wifi is challenging but not major.  Libraries, rail/bus stations.  hanging outside cafe's etc..

GoatfishData

bitcoin

Any ideas on how Bitcoin can help those unfortunate enough to end up Homeless

I've actually seen some posts about people using Bitcoin with an old phone that has no internet connection:

https://twitter.com/Machankura8333/status/1664020799152324609?s=20

It's kinda cool, not sure in which locations it will work though