7 ways you're draining your iPhone battery

CBS NEWS -- If you're like the majority of iPhone addicts, you're constantly scanning for outlets the second you walk into a room, hoping to find a spot to charge your phone before it dies... again.But before you find yourself stuck without a cord, available outlet or portable charger, you may want to consider taking a more proactive approach to preserve battery life.Here are 7 ways you could be draining your iPhone's battery without even knowing it:1. Plugging your iPhone into a computer that's