Note 8 wont allow video call? my friend and i both bought the note 8 so we could use the video call function but it always say's video call unavailable. Samsung rep said it is only a function available for metro pcs or t-mobile, is this true? has anoyone tried the vidoe call function yet? both our phone settings say hd video chat enabled. If it was only for certain carriers why was it not disclosed? we have tried using it while on and off wifi.