Macs Only! Tip--Extend the iPhone's Battery Life Significantly

In our iPhone use the past three we have noticed that the battery lasts much longer than we had expected. In fact, we commented in our long airline flight article that we think Apple has significantly underestimated the iPhone's battery life. We normally go 3 days without needing to charge our iPhone and, even then, the battery life is still registering as only half gone. But we wondered about the reports of people getting only a day's use.

Then, the day before yesterday we accidentally left the iPhone's Wi-Fi and telephone capability on even though there is no cell phone service available that we can connect to and no Wi-Fi available. We noticed by the end of the day, that our iPhone's battery was almost completely depleted.

We charged up our iPhone, turned Wi-Fi off and turned Airplane Mode on. We normally keep Wi-Fi off unless we are specifically using it for email or Web surfing and we do not use Bluetooth. Our iPhone's battery not only lasted all day but it's hard to tell that it has lost any life at all in two days use. We did use the iPhone to check times in various places and to play music for an hour or so each day.

Our advice, then, is to definitely turn Wi-Fi off unless using it. The same with Bluetooth. When you are in an area with no cell phone service, turn on Airplane Mode. These two devices constantly looking for a signal in places where there are none apparently burn up a lot of battery life doing so. [Bill Fox]