This is relevant for anyone looking for alternatives for WhatsApp and why IMO using a chat app with XMPP is the only future proof choice as a proven open protocol with interoperability built in (think email)

There are clients on all major platforms and even some that will allow registration directly within the app, blabber.im/en is a great example of this.

Or, if you have the know how, consider helping a friend or family member by hosting your own XMPP server and setting them up:) (1/2)