Taught is a mobile phone holder, especially for a mechanical vehicle, having a two-part body with side clamps and provided with a coupling/locking module, which has two step-shaped side clamps (10) on both of its sides. The side clamps are provided with a tooth (14) on their upper arm and are coupled with each other by means of unlocking buttons (3). The clamps are also provided with pins, which engage with the guides and the cams in the body and thus make the clamps move with a translational motion towards the inside of the holder combined with a concurrent rotational motion towards the inside of the holder. In the end phase of this motion the clamps are locked thus also locking the mobile phone in the holder.