Mobile device fixture for automated calibration of electronic display screens and method of use

A method of performing a calibration test of an electronic display screen by a mobile device held by an adjustable arm of a fixture attached to the electronic display screen, the method comprising:

• receiving an identification of the electronic display screen by the mobile device;
• based on the identification, receiving a test procedure by the mobile device to calibrate the electronic display screen;
• sending one or more images from the mobile device to the electronic display screen to display, as specified by the test procedure;
• sending a set of one or more signals from the mobile device to a processor of a controller of the fixture to move the adjustable arm to point a camera of the mobile device towards a point on the electronic display screen, as specified by the test procedure;
• in response to receiving the set of one or more signals to move the adjustable arm, sending a set of one or more signals, from the processor of the controller of the fixture, to a set of one or more motors of the fixture to move the adjustable arm to point the camera of the mobile device towards the point on the electronic display screen;
• by the processor of the mobile device, commanding the camera of the mobile device to take an image of a region around the point;
• in response to the command from the processor of the mobile device, taking the image of the region by the camera of the mobile device;
• comparing a set of parameters of at least one pixel or one sub-pixel of the image with a set of corresponding expected value;
• and
• by the processor of the mobile device, sending one or more signals to the electronic display screen to calibrate the electronic display screen when a difference between the set of parameters and the corresponding expected values exceeds a threshold.