A phone holder for a mobile phone testing apparatus which comprises at least a base plate, a rest structure on the base plate for supporting a mobile phone, at least one block for contacting a mobile phone's narrow side, wherein the at least one block is moveably attached to the base plate, thereby enabling adapting the position of the block to a mobile phone being supported by said rest, and clamping means for releasable fixing the at least one first block in said position can be configured for securely holding almost any mobile phone model.