I have a meizu MX4, which I update to OTA3 a while ago. Since then, I have a lot of trouble with sound. It doesn't work reliably with phone call and alarm : sometimes yes, sometimes not ! But no problem with headphones.
So I tried everything I know :
- look carefully in the forum and elsewhere,
- switch back and forth between different channels,
- I think I tried 16.04 as well,
- clean install,
- clean install form firmware upgrade.
Finally, I am using an old NEXUS 4 with OTA3 without any problem. But, the big screen and the camera of the MX4 is waiting on the shelf.
Did anyone encounter the same issue ? If not, I would like to go back to OTA2 to have at least a usable phone but I don't know how to do it.