Chrome error **ERR_SPDY_TRANSPORT_SECURITY** only on mobile device I'm trying to brows one website in my SAMSUNG GRAND MAX mobile, using Chrome/ UC browser etc.
it shows below error 

This webpage is not availale
ERR_SPDY_TRANSPORT_SECURITY


but same website is working fine on Desktop's Chrome browser.
SPDY is a protocol of chrome browser developed by Google. It was designed to load web pages faster and to improve web security.
However this protocol has been deprecated in favour of the HTTP/2 Standard.


  Google’s servers will likely support SPDY quite a bit longer than its
  browser, but in the long run, it will likely completely shut of SPDY
  support there, too.


Possible reasons may therefore be an outdated browser, or perhaps firewall settings (if you have installed a firewall on your device etc)

Possible ways to resolve this error: 


Updating the browser


First and foremost, update the browser and check if the same error shows. Usually latest build would have fixed bugs from previous builds.

Flush sockets in your browser:


Visit this url in your Chrome browser: chrome://net-internals/#sockets
Select "Flush sockets" in top right screen (drop down arrow)

Clearing hosts  cache


To clear hosts cache of chrome, visit this url; chrome://net-internals/#dns and tap on Clear host cache button