[dbrgn]

As already mentioned in another comment, since December there's a new cross-platform server based backup that will allow you to transfer your ID, settings, contacts and groups to other devices: https://threema.ch/en/blog/posts/threema-safe-en The design is documented in the crypto whitepaper: https://threema.ch/press-files/2_documentation/cryptography_... You can also host your own backup server.

The iOS integration is still in Beta, but will be released soon. Windows Phone will also support this.

[xpaulbettsx]

But no actual content. Normal people don't care about this nonsense, they just want to talk to their friends, and I get to explain to them why the only way they can read their old messages is via a zip file full of TXT documents.

[fabiandesimone]

People that don't care about this just use WhatsApp, Facebook Messenger, etc. They are well served, so not sure what exactly are you complaining about.

[xpaulbettsx]

They don't though. They get lured in by news of the "NSA spying on them", install this app, and later find out all of the caveats after they're committed and end up losing data. It sucks.