os update for volte option

[Titucy9]

My carrier grameenphone  provide volte.  my phone note 10 plus but phone os not volte option. Plz add volte option to use volte.

[DarkClawX]

note 10 Plus is already a VoLTE device. apni apnar sim upgrade korun, 4g t

[Titucy9]

sim a volte active but no option volte in phone

[AbujasemSumil]

Now what?