I changed my the design of the middle part of lens. It is more convenient .
The wall thickness of the box there is 1.5 mm. If they were thicker - will increase printing. Use a rasp to expand the holes, if necessary.
This back cover is not very convenient. If it will not fit to your phone - use the rubber band.
I ordered a silicone suckers for the back cover. The phone will not slip.
Watch for changes!
https://www.youtube.com/watch?t=1&v=uzJ-a_K3tdc

Printer: Prusa i3

Rafts: Doesn't Matter

Supports: Doesn't Matter

Infill: 0,15

Notes: