iPhone4 and OS4 have an improved battery life, but let’s face it – iPhone battery life problems will always persist (you just can’t get enough!). Paying attention to just a few common sense pointers will pay off with a longer battery life as well as battery lifespan for your iPhone. “Battery life” means the time your iPhone will run before it must be recharged. “Battery lifespan” means the total amount of time your battery will last before it must be replaced.
This article is meant to be a fine collection of iPhone battery life saving tips and tricks that I’ve collected since I started using iPhone.
1. Keeping iPhone in Ideal Temperature Conditions
The most important and obvious thing is to keep your iPhone out of the sun or a hot car (including the glove box). Heat will degrade your battery’s performance the most. Your iPhone works best between 32° to 95° F. Apple advices you store it in environments of -4° to 113° F (i.e. o° to 35° C and -20° to 45° C). Best battery life and lifespan can be achieved by keeping your iPhone as near room temperature as possible (72° F or 22° C).
2. Reduce Brightness
Dimming the screen is another obvious way to extend battery life. Go to Settings > Brightness and drag the slider to the left to lower the default screen brightness. In addition, turning on Auto-Brightness allows the screen to adjust its brightness based on current lighting conditions. Go to Settings > Brightness and set Auto-Brightness to On.
3. Turn Off Bluetooth
How often do you actually use your Bluetooth? If you can honestly say you use it more than once a day then you may have good reason to leave Bluetooth enabled all the time but most of us don’t. You can turn off Bluetooth to save a lot of power. Go to Settings > General > Bluetooth and set Bluetooth to Off.
4. Fetch New Data Less Frequently
Applications such as Mail can be set to fetch data at specific intervals. The more frequently email or other data is fetched, the quicker your battery may drain. It is further bad news if you have multiple email accounts. Best is to fetch new data manually (whenever you need). Choose Settings > Mail, Contacts, Calendars > Fetch New Data and tap Manually. If your work is heavily email centric, you can increase the fetch interval by going to to Settings > Mail, Contacts, Calendars > Fetch New Data and tap a higher duration like Hourly.
5. Turn Off Push Mail
If you have a push mail account such as Yahoo!, MobileMe, or Microsoft Exchange, turn off push when you don’t need it. Go to Settings > Mail, Contacts, Calendars > Fetch New Data and set Push to Off. Messages sent to your push email accounts will now be received on your phone based on your Fetch settings (changed above) rather than as they arrive. If you don’t use push mail accounts, you can even switch to Push Off.
6. Turn Off Push Notifications
Some applications from the App Store use the Apple Push Notification service to alert you of updates or new data. For example, do you really need to be notified when someone sends a message in Facebook or Tweets? To disable push notifications, go to Settings > Notifications and set Notifications to Off for as many apps as possible. .
7. Minimize Use of Location Services
Applications that actively use location services such as Maps, Starbucks, Trapster, Pizza Hut etc use reduce battery life. To disable location services, go to Settings > Location Services or use location services only when needed.
8. Minimize Use of Third-Party Applications
Excessive use of applications such as games that prevent the screen from dimming or shutting off or applications that use location services reduce battery life.
9. Turn off 3G (GSM model only)
Using 3G cellular networks loads data faster, but may also decrease battery life, especially in areas with limited 3G coverage. To disable 3G, from the Home screen choose Settings > General > Network and set Enable 3G to Off. You will still be able to make and receive calls and access cellular data networks via EDGE or GPRS where available.
10.Turn Wi-Fi Off
The other kind of high-speed network that the iPhone can connect to is Wi-Fi. Wi-Fi is even faster than 3G, though it’s only available where there’s a hotspot (not almost everywhere like 3G). Keeping Wi-Fi turned on at all times in hopes that an open hotspot will appear is a sure way to drain your battery life. So, unless you’re using it right this second, keep Wi-Fi turned off.
11. Turn off EQ
Applying an equalizer setting to song playback on your iPhone can decrease battery life. To turn EQ off, go to Settings > iPod > EQ and tap Off. Note that if you’ve added EQ to songs directly in iTunes, you’ll need to set EQ on iPhone to Flat in order to have the same effect as Off because iPhone keeps your iTunes settings intact. Go to Settings > iPod > EQ and tap Flat.
12. Update to the Latest Software