Anyone who’s used an iPhone for even a few days has discovered that while these phones are more powerful, and more fun, than perhaps any other cell or smart phone, that fun comes with a price: battery use. Any halfway intensive iPhone user will recharge their phone almost every couple of days. There are ways to conserve iPhone battery life, but many of them involve turning off services and features, which makes it a choice between all the cool things that the iPhone can do and having enough juice to do them.
Limit apps churn up data and power in background
You now can limit which inactive apps download data, therefore consuming power in background. For example, though it may be functional for the mapping app to offer you with turn-by-turn up to date directions on road, you might not wish other apps, like Stocks app, to keep updating if you’re not mainly interested in financial market. In order to change the setting, tap to Settings, then proceed to General and go to Background App Refresh, deselect apps which you do not wish to update the background while they aren’t in use.
Put Lower Screen Brightness
You can control the default brightness of your iPhone screen with this slider. Needless to say, the brighter the default setting for the screen, the more power it requires. Keep the screen dimmer to conserve more of your battery by tapping:
Update to the latest software
Apple engineers implement frequent changes to iPhone software, making it necessary to update to the latest software in order to harness those changes. If your phone is operating iOS 5 or later, check for software update availability by going to Settings → General → Software Update. To check for software update availability through iTunes, plug your iPhone into your computer and look for it in the source list. Click on the iPhone in the source list and then click on “Check for Updates.”
Block persistent caller from contacting you
The calls drain the battery meter significantly, even if you do not pick up the incoming calls. In case you get same person calling persistently, you can block them now from reaching you. For doing this, tap on Settings and then roll down to Phone. Roll down to Blocked further and select contacts you automatically wish to reject access. While this aspect blocks the incoming calls, it doesn’t stop the callers from leaving you voicemail.
Turn Cellular Data and (especially) 3G off.
Go to Setting → General → Cellular → Switch Cellular Data and Enable 3G to Off.
Disable Dynamic Backgrounds
Another neat feature introduced in iOS 7 is animated wallpapers that move underneath your app icons. These dynamic backgrounds offer a cool interface flourish, but they also use more power than a simple static background image. Dynamic Backgrounds aren't a feature you have to turn on or off, just don't select the Dynamic Backgrounds in the Wallpapers & Backgrounds menu.
Turn off Background Refresh for apps you don't care about.
This keeps the phone active and doing things in the background, including polling the data network, which reduces battery life. Go to Settings > General > Background App Refresh, and either turn it off globally, or deactivate it for certain apps as you see fit. When you return to the app, it may take a moment longer to bring you new information, but it otherwise shouldn't have any effect on how the app works.When no coverage exists, switch to airplane mode.Your iPhone always tries to search for coverage, even in places where no coverage exists, burning battery power as it does so. For this reason, it's recommended to switch over to airplane mode when you are in such an area.
Turn Off LTE or Cellular Data
The nearly perpetual connectivity offered by the iPhone means connecting to 3G and speedy 4G LTE cellular phone networks. Not surprisingly, using 3G, and especially 4G LTE, requires more energy to get the quicker data speeds and higher-quality calls. It’s tough to go slower, but if you need more power, turn off LTE and just use the older, slower networks. Your battery will last longer (though you’ll need it when you’re downloading websites more slowly!) or turn off all cellular data and either just use Wi-Fi or no connectivity at all.
Disable Siri feature of ‘raise to speak’
Siri can be simply activated by holding iPhone near your face, like you’re having face-to-face chat with intelligent assistant. However, proximity hardware sensor always is checking to observe if you’re nearby. This might impact the battery over course of day. Head to the Settings > General > Siri, disable this ‘Raise to Speak’ icon to disable this specific feature. The alternative of how to save battery on iphone isn’t so bad too: You still can hold down home button to talk to Siri.
Turn off Location Services and Frequent Locations
This is a big one, as hitting the iPhone's GPS constantly can blaze through your battery. Head to Settings > Privacy > Location Services to cap this behavior. You can tap the On/Off slider next to Location Services to turn all of them off, but you can also disable these services on an individual app basis below. Many apps don't need to know your whereabouts, especially in the background. Another one to be aware of is Frequent Locations, a relatively new feature that tracks where you are most often in order for apps to send you targeted ads; aside from being annoying, it also drains battery.
Always Lock your phone
If your phone isn't set to a quick auto-lock time already, be sure to correct it. There's a good chance that your phone could waste battery power when you aren't using it if it isn't locked.
Fetch Email Less Often
The less often your phone accesses a network, the less battery it uses. Save battery life by setting your phone to check your email accounts less often. Try checking every hour or, if you’re really serious about saving battery, manually. Manual checks means you’ll never have email waiting for you on your phone, but you’ll also stave off the red battery icon.
When not in use Switch off Bluetooth, Wi-Fi when you’re out
If you’re not sending items to some other devices utilizing Bluetooth, or not using Wi-Fi hotspot, these can be turned off always. Under Control Center, tap Wi-Fi button off, and Bluetooth button also off. Consider a battery case or an add-on battery. Battery cases from Kensington, Mophie, and other manufacturers combine a hardware enclosure, which protects your phone, with an extended battery that can double your iPhone's endurance. They average about $70; one favorite is our Editors' Choice, the Unu DX Protective Battery Case for iPhone 5, and we also like the Phonesuit Elite Battery Case and Mophie Juice Pack Plus.
Let your phone complete at least one charge cycle each month.
A charge cycle is when you charge the phone to 100% and let the battery power drain completely, after which you charge it again. Going through a charge cycle per month keeps the electrons in the iPhone lithium battery properly greased, so to speak.
One Common Mistake: Quitting Apps Doesn't Save Battery
When you talk about tips for saving battery life on your iPhone, perhaps the most common one that comes up is quitting your apps when you're done with them, rather than letting them run in the background. This is wrong. In fact, regularly quitting your apps in that way can actually make your battery drain faster. So, if saving battery life is important to you, don't follow this bad tip.
Do Less-Battery-Intensive Things
Not all ways to save battery life involve settings. Some of them involve the way you use the phone. Things that require the phone be on for long periods of time, or use a lot of system resources, suck the most battery. These things include movies, games, and browsing the web. If you need to conserve battery, limit your use of battery-intensive apps.