The smartphone must be equipped with a suitable COMPIT COVER for secure mounting on the COMPIT or +COM/UNIT mount. A smartphone cover with a special fastening mechanism allows the phone to be secured to the mount by pushing and twisting in the wide bayonet lock. The covers are made of shock-absorbing material, covering the outer edges of the smartphone and protecting it in case of drop or impact. The use of high-quality, wear-resistant plastic makes the cover extremely durable in the areas of greatest stress. The two-fold cover, which is pleasant to the touch, allows easy insertion and removal of the phone.