I tried to tell "Gwen in the morning" that leaving a cell phone on the charger all night wasn't the best thing.  Here's why.According to Time.com.  Charging your phone all night will wear down your phone's ability to hold a charge, faster.  Like I am going to wake up in the middle of the night to unplug the charger.  The way they make cell phones and the batteries, etc...we are kinda screwed anyway.  They want the phone to get replaced more often.  More often, more money for them.