Unread text messages may be causing battery drain.
I have been wondering what causes my battery to drain fast, and I think unread text messages may be the culprit. I notice this in the morning, when I check my phone and see that I have a couple of unread messages from friends.
There was also a time when I was in yoga class and I got several messages and a missed call while my phone was on silent. The battery dropped down to half the charge in an hour and a half.
I am wondering if anyone has the same experience, and if you do, is there any solution for this? I have the LED off for messages. I also use a very simple notification tone. Instant previews are off.