Mock up of size comparison with Motorola Photon Q
(I used a Note 8 for comparison, which has also a 6" screen and has similar (rounded) edges.) For the pocket, it should be fine, expecting it to be a bit thinner...

And: Note 8 has 6,3" (full rectangle) or (6,2" within rounded corners). So depending on the actual screen "6 inch" may perhaps vary and the real thing is even smaller than depicted here.

So it should be something like that:

(Yeah, my post # ... it's #666! )