@rinigus - I was chatting with someone on TG who is running this port on their XZ2c dual sim, and they're having battery-drain problems. They noticed that the phone never goes into sleep, even with no apps opem and the screen off, battery current level is always active. I don't have that issue. He's tried disabling services, and uninstalling apps, etc, but can't trace it.
Do you have any ideas to troubleshoot, or, are you on Telegram, (he doesn't have TMO account)?