My top few:<p>* Facebook - 2.7 hrs screen, 4.5 hrs bg, 42%<p>* Tumblr - 2.8 hrs screen, 27 min bg, 19%<p>* Safari - 1.1 hrs screen, 11%<p>Facebook does seem to be a prime offender in my case, but I don&#x27;t think I have background refresh disabled.