I leave the iPhone on all day, and turn it off at night. I have a landline, so I like to give my iPhone a rest at night.
With my iPad, I turn it off right after I'm finished using it just so I don't forget to turn it off (as I may not use it for days).
With my iPad, I turn it off right after I'm finished using it just so I don't forget to turn it off (as I may not use it for days).