Popsocket holder for moped

I have designed this popsocket holder for my moped, so i can use my phone for maps as i am driving. I could not find any existing designs that were secure enough for what i needed. stick the bottom of the holder to any flat surface. i choose to put mine on the speedometer where there is not anything important The design requires an m3 nut(there's place for 2 incase its needed), an m3 bolt with a length of 4 cm and an m4 bolt with the length of 2 cm. All bolt sizes are without the head of the bolt. I am only talking about the thread length. There are 2 parts to the print. the enclosure and the latch.

The m3 nut goes in the bigger opening on the closing system and the m3 bolt goes in through the other side and screws into the nut. the m4 bolt screws directly into the hinge. The bolt is not going to come out again, so I chose to do it like so.

a screwdriver is required to put the phone in or take it out. I wanted it to be very secure.