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

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.