Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Could it have been... "Fast dormancy"?
dial *#9900# on your dial pad.
See here for more info:-
Disable Fast Dormancy, Improve Battery Life On The Galaxy S II : Ctrl + Z
PS
is FD used on vodafone & 02 (giffgaff) ?
Fast dormancy determines how long it takes for your H+ signal to change to 3g when not in use. So with fast dormancy turned off when a webpage has finished loading it will take longer to switch to 3g therefore making it quicker to load the next page.
