I don't know where you got this from, but contacts storage DOES NOT drain the battery. "contacts storage 10.0.54" is just a version number. If a new update for contacts storage is installed, then that number will change. The contacts are stored on the internal memory of the phone. The battery will drain if you use the phone to make/receive calls, browse the internet, send email, play games, etc.
yea, that's the version number, it's included to assist in trouble shooting. I'm getting the battery drain info from the device monitoring systems. Under battery it consistently states that Contacts Storage has used 40-60% of my battery. This problem stated about 4 days ago.
