Hi, could it be that you haven’t mentioned anything about your settings? There are a few post refering to the same issue of battery consumption and I saw your replies on some of them, but never read anything about your settings.
- Do you have proxy DHT enabled?
- What about “Allow running in background to receive calls and messages.”?
- I don’t know if iOS version has some kind of push notifications; if so, have you checked them?
On the other hand, related to alternatives to Jami, I’d like to mention: Tox, Briar and XMPP protocol. Tox and Briar are free and distributed. XMPP is a protocol, so there are many apps that you can find for different platforms. It is an open protocol and there are free apps that work with it. One important difference is that it implies decentralized communication (instead of distributed).