
No 3G where you are? Turn it off to extend battery life.
While it’s my job to know every in and out of gadgets I own or test, I’m rarely surprised when I point out to friends or family members several cellphone battery zapping features they didn’t know they could turn off (or know they existed in the first place). If the only setting you’ve change is your cell phone’s ringtone, getting to know your device’s other settings may reward you with longer talk times and less recharging. Since settings vary widely depending on brand an model, you may need to poke around a little to find your own cell phone’s settings. Here are the top battery draining features you’ll want to tweak or turn off completely if you aren’t using them.
Brightness and Sleep: Sometimes the brightness setting is referred to as display. Often the sleep setting is called auto-lock or auto-timeout or power saver. Whatever the nomenclature, this pair of settings goes a long way to longer battery life. Set the dim brightness as low it goes without being impossible to see. If your cellphone has an auto-dim feature – which senses ambient light and dims or brightens the display accordingly – use it. The sleep or auto-lock setting determines how long the screen (or screens) stay lit before dimming or going completely dark when it senses no activity. My iPhone is set for one minute because it takes can take me that to read an ebook page in bed at night before I tap the screen to flip to the next page. The iPhone also has a sensor to automatically blacken the screen when I raise it to my ear to answer a call, and certain other phones like Palm’s Treo line offers a similar feature.
Ringer and Vibrate: The louder your ringtone, the more battery juice it drinks. Notching down the ringer – and the speaker volume while in a call – will extend battery life. Ditto for the vibrate feature. The first generation iPhone’s maximum ringer volume was so low and the vibration effect so weak that I frequently missed calls even when both were set to alert me of an incoming calls. The new iPhone 3G is louder and buzzier so now I’m fine with one or the other: Ringing for most occasions, and vibrate-only during movies other situations in which cellphones should be seen at best but most certainly not heard.
3G/Edge and other Carrier Network Settings: The new iPhone 3G receives three kinds of signals from the AT&T network: Standard, Edge, and 3G. In remote locations where the iPhone’s display shows only signal strength bars but not Edge or 3G indicator (which offer fast and faster web browsing and email checking, respectively), I turn off both to extend battery life. Other handsets on AT&T or other carriers offer similar settings. If you’re using a voice-only plan but not data (which is to say, you don’t pay extra on your plan for the ability to use your phone to browse the web or check e-mail), turn off your cell phone’s data network setting if it has one.
Bluetooth: My sister had no idea that icon that looks like an abstract pretzel was actually the Bluetooth indicator – which means it was turned on and using battery juice, even though she wasn’t using it. Rather than turn it off I gave her Bluetooth wireless headset so she can make and receive calls with her hands free. I also showed her how Bluetooth allows her to wirelessly transfer snapshots she takes with the phone to her notebook computer. If your cellphone has Bluetooth yet you don’t use a wireless headset or transfer pictures or other files between it and your computer (assuming your computer has Bluetooth; many notebooks do, so check your Control Panel settings to find out), it’s falling upon deaf ears, so to speak. Shut it off and you’ll squeak out longer battery life.
WiFi and GPS: My iPhone 3G’s WiFi receiver lets me tap into my wireless router or café hotspots for a faster web browsing, and sending and receiving emails. A feature to ask me if I want to join a WiFi network whenever it finds one is a drain on the battery, so I shut it off and connect only to WiFi networks when I want to, depending on where I am. When I’m on mobile – be it walking, cycling or driving – I turn off WiFi to achieve longer battery life. Do the same if your cell phone has built-in WiFi and you’re not using it. Ditto for GPS, which I generally leave on all of the time to pinpoint my location with the iPhone’s map application to locate nearby businesses then guide me there with on-screen directions. At times when I know I won’t be able to plug in until the end of the day I turn GPS off and then on again if I need it, because it – like WiFi and Bluetooth and the higher-speed network settings – just loves to suck the life out of the battery even when it’s not actively in use.
Posted by
Joe Hutsko
Tags:
battery life,
energy savings tips,
green gadget,
iPhone 3G,
power saver.
Categories:
How-to,
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