Recently upgraded from Kitkat to Lollipop. As fellow users will know there is a square symbol that give access to open apps. Now I tend to acquire a lot of these. To close them you can either swipe each one or hit the X in the corner.
Now my question is "is there anyway you can close them all in one hit' As far as I can see there is not
As an ancillary question is it fact better to leave them all open anyway rather than closing them and then reopening them. I assume the latter would use more power.
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