Why does my Android smartphone not work with the Personal Vision Tracker?

While you can install the EyeQue PVT app on android phones, the phone may be blocked from running a vision test.  Unlike iOS phones, Android phones come from a variety of manufacturers and have different brands and naming conventions.  There can also be variations in specifications of the device such as display parameters.  The most important parameters for the EyeQue Personal Vision Tracker (PVT) is the pixel per inch (PPI) and the operating system.  

Over the past year since the PVT has been released we have calibrated and supported over 90 different types of Android based smartphones.  Through the calibration process, our engineering team has developed a new method that will allow a majority of Android smartphones to use the EyeQue PVT app.  If your smartphone has a PPI greater than 250, it will work with the PVT.  Any smartphone with a PPI lower than 250 will not work with the PVT.  For further questions regarding support for your smartphone, please contact EyeQue support at [e-mail].