Anyone having cell phone battery problems

[roberb7]

Here's a clue: if you're using Telcel or Movistar, you probably normally have a 3G connection. However, if 3G is unavailable, your phone will probably drop down to EDGE, and this will indeed cause your phone to burn up the battery very quickly. (With my phone, about four hours.)

If this is indeed the problem, you can avoid it by shutting down data. Doing this isn't costing you anything, because you're not going to be able to do anything with data using EDGE anyway.