I am back home from Cuba. Made many friends and donated devices with lightning wallets and bitcoin on them.

Unfortunately, most people in the world use whatsapp to communicate and there was no time to explain to everyone beyond the lightning wallet topic.

I can either install whatsapp on my work tablet or on my daily driver with GrapheneOS on it. I have other devices wtihout phone numbers too but cant install wahtsapp without phone number I dont think.

I would just use SMS but too expensive for people in many countries.

Thoughts and suggestions are appreciated.