4. Yes, they are. 5. System is upgaded to 2.0.2.51. Reinstall? with these commands? I don't use patches. I use phone for 10 days only. I try to migrate from N9. LTE isn't important for this moment and one local operator use band3, but it isn't my case. how to determine audio chip? dmesg | grep -i audio don't work for me.