When browsing through the site to check if the Razer Phone 1 is compatible with Kishi V1, I came across some comments from users who claimed that their RP1 did not fit in the Kishi unless they used the special insert. However, I recently acquired a Kishi for my RP1 and can confirm that it fits perfectly without the need for any special inserts. The fit is tight and secure, and I am satisfied with my setup, which I've dubbed my "mini steam deck". It's possible that Razer may have made changes to the insert design for the V1, as I encountered no problems connecting my RP1.