Wondering if someone who knows more about the settings might be able to suggest something here. I work out of my home and my office is in my basement. Despite being in a populated area with a high signal strength, my signal in my basement is very poor - usually between 0 and 2 bars. I had to set up an Airave so that I can take business calls in my office that come in on my mobile. Originally was getting HORRIBLE battery life, but I made the change to CDMA Auto and also changed the Network under Roaming Settings to Sprint Only. In addition I did the power on/off battery charge sync. Battery life improved greatly with these three changes when I made them last weekend (when I'm not downstairs as much). During the work week, I noticed my battery life seemed to be getting worse. Today, I was outside all day with great signal strength, and I'm going on 14 hrs and still have 70% remaining. This basically confirms to me what I suspected - my phone is still doing something when I'm in my basement with the low signal that is draining the battery at a higher rate. When I am in my basement using the "About Phone" information under settings, I am without signal upwards of 75% of the time. Elsewhere it's less than 10% of the time without signal. Any ideas? If you did not know, the Airave only works for voice-calls and only boosts your signal when a call is coming in or going out. My phone still shows 0-2 bars until I hit send or answer a call when in my basement. The Airave does not support data. Other items - I have the phone set to check my personal e-mail account every hour. I have my Exchange account on Push (which I don't want to change). I leave Nav off, Wifi off, Bluetooth off. No 4G in my area so it is off, as well. I have Google Talk off, don't use Facebook so all FB settings are off. Can't think of anything else. Your help is appreciated.