iPhone XS Max 6,5 inch art board sizes in XD

[lilitp70814048]

Hi everyone. 
Please help me understand how to score iPhone XS Max 6,5 inch art board sizes in XD. 
So the iPhone XS Max 6.5-inch screenshot size is 1242 x 2688 pixels. 
If I start with 1242 x 2688 pixels it's looking gigantic. 
Where I can find or score the correct artboard sizes for iPhones? 

Thanks a lot in advance

Regards, Lilit.

[lilitp70814048]

help, please 🥺