This strap joint is designed for the CMF Phone series, including the CMF Phone 1 and CMF Phone 2 Pro.
In the v1, the middle part was fixed, but in v2, it can now rotate freely.
This makes the screw less likely to come loose.
There is a support placed to cover the screw hole on the back of the top part. If it is difficult to remove, inserting a screw from the side with the hole will automatically push it out.
Align the protrusion of the top part with the hole in the middle part and snap them together.
Place the bottom part under the middle part.
Make sure the bottom part's recessed side is facing downward.
Secure everything with a screw from the top.
The author marked this model as their own original creation.