Mobile Phone Mount without screw

This is the better Version of
https://www.thingiverse.com/thing:2413379

improvements:
- more stable
- dual device posible but not necessary
- better to mount
- does not deform

works perfect with https://www.aliexpress.com/item/Universal-360-Degree-Rotating-Motorcycle-Rear-Mirror-Mobile-Phone-Holder-Mount/32827042657.html (Adapter-Standardaufnahme.STL not necessary)

Print with PETG or ABS. PLA is not recommended
Infill, 35-50%