This is where apps like JuiceDefender come to the rescue. According to developer Latedroid, the app intelligently and transparently manages for you mobile connectivity and other battery-sensitive components.
Other power-saving features include switching away from 3G to 2G networks when the phone is not in use, turning off Wi-Fi if the battery charge dips below 20 percent, disabling data services during predetermined times (such as at night) and limiting CPU consumption when the phone is idle.
Cost: Free for the basic version, $3.50 for UltimateJuice.
Its awesome for taking notes in meetings, snapping a quick picture with the camera, remembering where you parked in a giant lot, recording voice notes of meetings, and backing up critical files on the go. Seriously, I could not do business without it, said Daniel K. OLeary, VP of Global Solutions for e-document company Lincware.
After you capture your idea, record your thought, save your webpage or mark your vehicle location, Evernote sorts and indexes your files to make them easily searchable and retrievable. Everything is synched via the cloud so you can access your files from any of your computing devices.
If you have an important call to make or text to send, youll end up obsessively checking your phone over and over again, hoping for a signal.
A better option is to download DeadZone. DeadZone monitors for a signal and when it finds one, it sets off an alarm. Available for the iPhone.