Either I need the app to forward any received text message to another phone number. This should be reliable, i.e. not stop when the phone is idle/sleeping.
Or, I need to sync all received message to a cloud, Nextcloud, Google Account, proprietary; so that I can read message from another device. This needs to be reasonable secure, i.e. either e2e encrypted or stored to trusted service. I’m willing to trust Nextcloud or google for the purpose. I’m also willing to trust a third-party service when run professionally, but I’m sceptical.
I used Nextcloud but now, I just forward copies to an extra email box, since I can reply to texts from there, which you can’t do with Nextcloud, called SMS Gate. Get it from F-Droid.
That sounds interesting.
I like the SMS gate app from f-droid suggested.
A different approach to read SMS from other devices, for example your PC, would be using kdeconnect. It’s supposed to allow you to read current messages, receive messages, and reply to messages, even send messages I believe. So perhaps an option, though not a syncing tool to keep SMS messages somewhere else, and I can’t tell about the encryption involved…
You can try and go Asteriks way, get a 3g modem, and be able to call and send sms
Would join, by joao apps meet your needs? It should get the job done, but I’m not sure how much you would trust it.
From the description on the Play Store: Yes.
The F-droid app is 5 years old and I don’t think my nextcloud server has this app, but it goes in the right direction.
My bad :( I overlooked the This app is abandoned. at that web page.
Bridge it to matrix https://matrix.org/ecosystem/bridges/sms/ or simply use a server of someone who bridges it for you
Looks good, but also complicated. I know nothing about Matrix. Do you think Beeper is good for a newbie?
Yes
