This is a quote from a jami review on google play.
For people who complain about it not working or messages not being delivered instantly. 1. Disable DHT proxy 2. Disable push notification 3. Enable Jami to be run in back ground. 4. Visit your phone’s battery optimisation and make sure Jami is not optimised for battery - if not the phone will kill the app and when you reopen the app to send - nothing happens 5. Enable TURN 6. Disable STUN After doing all this - it will work like a charm unless you have some other network issues. There are bugs but the app is stable and does the job. For people complaining about images/files not being transferred - drag and drop doesn’t work - it is a known bug. So as a work around you can go to the file using file explorer on Android choose the file and share using Jami - this works.
I have not tested jami on either android or ios. If settings
as described above are required then jami.net
should display instructions. And there should be
a link on
pointing towards the instructions. Same thing