It is a manual device you can use to punch holes on any leather surface. The leather hole punch features a cylindrical steel tip with a sharp, knife-like edge that easily cuts into the leather to ...

[bitluni] took matters into his own hands and built this nifty DIY hole punch for light-gauge sheet metal. A little backstory will probably help understand why [bitluni] needs so many holes.

The phones still have a traditional hole-punch camera on the cover display, while the design also allows users to take selfies using the rear cameras — with the cover display acting as a viewfinder.