Thanks for working on this! Saved my phone from the voLTE nightmare carriers are enforcing right now. Love having Android 11, too! And adding a vote for staying on 18.1; Android 12+ is such a worse UI/UX for my taste.
A few things that are still buggy: the phone always boots into the Light theme. Dark Mode settings will not persist. I currently have Tasker set to change this on boot, but it's hit or miss.
Also, Wi-Fi calling did not work on
@modpunk 's last build, but voLTE did. On the 09/22 build in this thread, Wi-Fi calling works well, but voLTE does not. I then changed the IMS toggle in the Xperia parts setting area, and it took a minute to find LTE but when it did voLTE worked!
Any idea how to make Dark Mode permanent? Is there a file somewhere I can patch?