I would recommend Wire ( https://wire.com/en/ https://wire.com/en/ ). All mobile and desktop OS and web too. In my experience it's reliable and private and the

I would recommend Wire ( https://wire.com/en/ https://wire.com/en/ ). All mobile and desktop OS and web too. In my experience it's reliable and private and the company behind it is extremely open and supportive of its users. I am not affiliated, I just like it.