I tend to carry a Fritz!Fon C5 in the pocket of my work pants so that I can be reached around the house. The older versions of the C5 worked well, I hardly had issues with the key lock. With the slightly newer version where the keys are a little more prominent, I have had issues with the key lock dropping a lot more easily.

I designed this sleeve to cover the keypad and especially protect the #-key which doubles as key lock key. I have iterated the design once to add more material over that button.

I might alter that section a little more in a quest for perfection. But for now, it works!

Print instructions

Category: Mobile Phone Print Settings

Printer: Prusa i3 MK3

Rafts: No

Supports: No

Resolution: 0.2mm

Infill: -

Filament: PLA

Notes: I made my latest print multi-colored by pausing the print and switching filament!