Country : HU
Provider : Yettel/Vodafone
Phone : Jolla C2
OS : 5.0.0.62
SMS works
MMS works
4G data transfer is stable
4G VoLTE remains registere
Sound in is very quiet, sound out is good. I can only make calls on speakerphone. Since it has 4G and 4G Volte, the incoming sound is quiet.