Question about Razer Kishi

In my experience, every phone goes up to at least 6.7 inches

any phone with USB-C in the middle of the narrower edge + such dimensions will fit:
145.3 to 163.7 by 68.2 to 78.1 by 7.0 to 8.8 mm
it is quite flexible.
According to Gsmarena p2' pro is:
155 x 73.9 x 7.8 mm

so it fits.