I printed this using AnkerMake M5 with their own PLA filament. I used 100% infill and 0.20mm layer height and supports. Print with large side on the print bed, file seems to be the wrong way by default.
The thickness is 2mm everywhere except in the spot for the magnet that is 1mm thick, magnet seems to stick through it well. The bottom holder is uneven because I only left what is needed for the microphone, speaker and charger visible.
Do keep in mind that the phone moves still inside a bit but I wanted it to be effortless to take the phone out and put it back in.
The size of the magnet holder is 35mm * 50mm with curved edges and is at depth of 1mm.
The author marked this model as their own original creation.