I pulled the section on CDMA as I wasn't sure how relevant this was for folks. If there's a good argument for keeping it in let's discuss it here.
"Finally, there is one more issue for users of CDMA carriers (Sprint and Verizon, or anything without a SIM card). Because of the way that CDMA operates, going in and out of areas with reception will drain a phone's battery faster than staying in an area with continuous or no reception. The difference isn't massive but is very noticeable. "