Smartphone stand (V-shaped)

This is a very thin folding smartphone stand.

[Remaining problem]
The hinge part may loosen little by little when using it. When the smartphone is in this state, the stand moves to narrow the V-shaped angle and becomes unstable.

[size]
height: 21.5mm, thickness:6mm, length:68mm

[screws to use]
M3 CAP 18mm x1
It is recommended to use glue to prevent the screws from loosening.
No nuts needed.

[print conditions]
-printing type: FDM
-printer: Original Prusa i3 MKS
-filament: PLA
-support: yes
-brim: no
-raft: doesn't matter
-print directions: please refer to the photo