Here's How Google Checks For Lag On Your Android Phone
 

Google hates lag on smartphones as much as you do -- enough so that the search giant has a robot dedicated to spotting that delay between your finger input and what happens on screen. Meet the Chrome TouchBot, an OptoFidelity-made machine that gauges the touchscreen latency on Android and Chrome OS devices.

Facebook will have two-thirds of the number of views as its Google-owned competitor in 2015, getting to this level much faster than YouTube.

I've noticed that most android devices will underperforme if you upgrade them.

Interested in trying the tests by yourself.

The video above highlights how the robot constantly taps different sections of the screen to gauge the responsiveness of the display. The web-based tests assist in determining both hardware-and software-related issues, which can then be rectified.