Save iPhone (or iPad) Battery Life From Draining While You Sleep!

I noticed recently that my iPhone battery life was between 15% and 20% less when I woke up in the morning than when I went to sleep.Should work on all iPhones, iPads & iPod Touchs.Unless I’m doing some serious sleep-surfing during the night this can only be automatic network activity.So one night, I decided to enable Airplane Mode and what do ye know – my battery didn’t even go down by a single