A support for a mobile device has a front face bearing a stationary jaw. The support includes a moving jaw facing the stationary jaw, mounted in translation on the front face of the support. The moving jaw is able to receive a side edge of the mobile device, and the support further includes at least one guide ramp secured to the support, on which the moving jaw is slidingly mounted between a separated position, in which the mobile device is placed against the moving jaw, and a maintaining position, in which the mobile device is kept pressed against the stationary jaw. The support includes at least one return element, secured to the support, cooperating with the moving jaw over the entire length of the guide ramp and able to grip the mobile device against the stationary jaw.