A mount for mounting a case of a handheld electronic device to a vehicle includes an arm comprising a pair of arm members, first and second coupling member engaged with the arm for adjustably coupling the device to the vehicle, a spring and a fastener for adjustably securing the two arms together. The fastener is rotatable between a first position in which the arm members are rigidly secured together and the first and second coupling members are rigidly secured to the arm and a second position for adjusting the first coupling member and the second coupling member relative to the arm. The spring biases the arm members towards each other when the fastener is in the second position.