Yes, Nokia 8.1 supports OTG. USB OTG or USB On-The-Go is one of the most recent technologies that allows you to connect your pen drives and in some cases hard disks to your smartphones and tablets. It has a cable and through that cable, you can directly view and use your pen drive in your smartphones.
You can find the specs of Nokia 8.1 here: Nokia 8.1
You can find the service center here: Nokia Service Centers
Video calling was never this easier. VoLte is all IP Based and allows you to make video calls from native dialing applications.
Moii Chhangte Mistry