I am not sure about the company claims.
However, according to the user reviews, the device does does not offer Screen Splitting.
In the meantime,do not forget to find all the detailed specifications and other latest updates regarding Nokia 2.1 here.
Yes, Nokia 2.1 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.
Specs: Nokia 2.1
The phone takes around 3 hours to charge from zero to 100 percent using the 5W charger that comes with the box. The phone does not support fast charging so 5W is all you get.
In the meantime,do not forget to find all the detailed specifications and other latest updates about the Nokia 2.1 here.