An essential App after purchasing a smartphone!
Try checking dead pixels of your new smartphone easily and simply.
Because there are no advertisements on it and no other special permissions are required,
you can freely use it periodically after installation for a long time.
It was made to easily check dead pixels
by throwing away complex functions that are useless when testing
and by equipping it with only necessary functions.
※ If you push the question mark icon, you can check the dead pixel sample.
They are not actual dead pixels on your device, so do not be misunderstood.