Car holder for iPhone 5/5s/SE w. cover

This is car-holder for an iPhone 5/5s/SE that is being used with a protective cover. Typically such covers increase the volume of the phone, and hence the internal space is bigger than that of a "naked" phone to accommodate for that.

The holder is intended to be attached to a bracket in the car using M2.5 screws.
There are numerous holes at the back to generalize the design and make it possible to attach it to all sorts of brackets. The holes have cavities for the screws' heads so that they