Which annoys the crap out of me that the X and XS (non-Max) don't support. They have a higher screen resolution than the XR!
The X and XS are 375x812 point screens.
The XR and Max are 414x896 point screens.
So for effective screen real estate, the XR and Max display the same amount of information, and both display much more information than the X and XS.
The difference is that the X, XS, and Max display those points x 3. The XR displays them x 2.
XS: 375x812 x 3 = 1125x2436
XR: 414x896 x 2 = 828x1792
Max: 414x896 x 3 = 1242x2688
BTW, given the above, I'm predicting a 375x812 x 2 small 5.5" iPhone in 2019. That would be 750x1624.
I was wondering this as well, thanks.
Further to it, though, does anyone know if Safari on an iPhone XR in landscape supports tabs? (I have a 7 Plus and really appreciate the iPad-like tabs at the top when in landscape.)
It is likely that whatever the Max can support, the XR can support as well. They are effectively the same screen target.