I've been suffering from iPhone battery drain lately. Hopefully iOS
5.1 will improve things, but until and unless that happens, here are
some tried and true ways to extend your battery charge from the
excellent idownload blog:
Note:
Keep in mind that these tips are a bit extreme, and you shouldn’t have
to turn off every setting in your iPhone to get reasonable battery life.
1. Turn off Location Services
It seems like almost every app
nowadays uses your location in some fashion, and all of that GPS work
can drain your battery. Just open up the Settings app, and select
Location Services. Keep in mind that if you turn off all location
services, you’ll lose the ability to use Find My iPhone. So you may want
to shut apps off individually and leave that one running.
2. Turn off Wi-Fi
This
is kind of a no brainer. Enabled Wi-Fi means another radio is running,
and using battery. It’s even worse if your Wi-Fi is on when you’re not
connected to a specific network and your phone is constantly searching.
Turn it off by opening the Settings app, and selecting Wi-Fi.
3. Make sure Bluetooth is off
This is another no-brainer. Even though the iPhone 4S uses low-powered Bluetooth
4.0, leaving it on still means another radio is running. Turn it off by
launching the Settings app, selecting General, and then Bluetooth.
4. Shut off Push data
Having
your new emails automatically pushed to you is pretty convenient, but
once again it will cost you battery life. Turn it off by opening
Settings, selecting Mail, Contacts, Calendars, and then Fetch New Data.
5. Turn off Vibration
If
you receive a lot of phone calls, messages or alerts, your phone’s
vibrator is working overtime. If you don’t absolutely need it, you can
save precious battery life by turning it off. Open up the Settings app,
and select Sounds.
6. Make sure Auto-Brightness is on
This
feature adjusts your display’s brightness according to the lighting of
your current environment. This keeps the display from being constantly
at its brightest. To check it out, open the Settings app, and select
Brightness.
7. Make sure Auto-Lock is on 1 Minute
By
default, Auto-Lock is set to one minute. That’s because the longer the
iPhone’s display is left on, the more battery it uses. If it’s set to
longer than one minute, you’ll notice a major difference in battery life
by lowering it. Adjust this in the Settings app by selecting General,
and then Auto-Lock.
8. Turn off Cellular Data
If you get poor cell reception at your home or place of business, you might try turning off Cellular Data
if you don’t need it. Searching for service weighs heavily on your
battery. Turn it off in Settings by selecting General, and then Network.
9. Turn the Equalizer off
The
iPhone’s Music app has an EQ feature that alters its sound output
according to your music preference. Because these adjustments happen on
the fly, your battery suffers. Switch this off by going to Settings,
tapping on Music and then EQ.
10. If all else fails, try a Restore
Restoring
your iPhone as a new device (not from a backup) can work wonders, and
in this case it can erase any problematic data or settings that may be
causing your battery to drain. Do this by hooking up your iPhone to your
computer, and clicking Restore. Make sure you set it up as a new
device.
Another thing to keep in mind is how much power Siri uses.
Not only is information being processed on the iPhone, but there is
also data transferring back and forth with Apple’s servers. Using this
feature frequently can certainly affect battery life.
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