So I know it's usually best to place your phone in airplane mode when your phone doesn't have signal; however, are there any alternatives to this if you're in an area that constantly gives no reception? I live in the first floor apartment and I'm guessing the materials of the building completely kill my cell signal because I barely ever have more than one bar of signal if any signal at all. For example, my cell standby is usually about 50-55% time without signal during a given day. I'm wondering if there is another setting or perhaps an app that will help save some battery or if I'm just stuck in a bad situation. Any help is appreciated.