It's no secret that smartphones are notorious battery hogs, with a growing number performing many of the functions of a full-size computer, as well as some things a desktop computer can’t do, such as navigating with GPS or starting a car. It is said that 25 percent of smartphone owners do most of their Internet browsing on their phones.
The dilemma is that the more you depend on your phone, the faster you’re going to drain its battery. While screen, processor and storage technology has advanced significantly, lithium-ion batteries haven’t changed much in 15 years. Incremental improvements in battery efficiency have been far outpaced by processing power and screen size and brightness, as well as 3G and 4G radios, Wi-Fi and Bluetooth antennas, HD cameras, GPS and a variety of other hardware, all of which require power.
Turn the screen brightness down. The screen uses a large proportion of your device’s energy store; the difference between full brightness and the dimmest can mean hours more battery life.
On iOS 7, use the dimming slider on the Control Centre, or in any version of iOS go to Settings -> Wallpaper & Brightness -> Brightness. It’s often a good idea to turn off auto-brightness, which makes the screen brighter when you are in bright surroundings. On Android, use the screen brightness toggle in Quick Settings,the brightness slider under display settings.
Reduce the backlight time of your phone to keep it minimal. In a basic mobile after making and receiving phone calls it is backlight that takes up the rest of the battery. Vibration takes up a huge amount of battery; use it in places like malls that are crowded and the ringtone can't be heard amidst the noise.
Switch off the Bluetooth and Wi-Fi receivers when not in use. When kept on it continuously keeps searching for devices and hot spots respectively. Turning off location data, or setting it to use Wi-Fi or 3G data rather than GPS works perfectly well. Only turn on Bluetooth and NFC as long as you need them, and there's no need to have both Wi-Fi and mobile data turned on at all times. If you use Wi-Fi a lot though, say at home and at work, then it makes sense to keep set your Wi-Fi to ''Always on during sleep'' as this uses less power than to have your Wi-Fi reconnecting every time you wake your phone.
Some phones have a battery/power saver mode, turn it on. It is the manufacturer's default setting to improve battery life.
Charge appropriately.Do not charge the phone as and when required, charge at intermittent days for 3 or 4 hours daily. If possible, buy ur cellphone good
chargers, of course, the original one is the best. The advantage of high quality charger will be seen in a long time.
Make sure to fully charge and fully drain your battery at least once a month. It's also smart to take your phone out of its case when it's charging, so that it won't generate excess heat. (Never let your phone get hotter than 95 degrees Fahrenheit or you risk permanently damaging it and reducing the battery capacity.) Keep in mind that like all rechargeable batteries, eventually your phone's battery may need to be replaced.
Last but not least, I should say that a good quality cellphone charger is a must. When you buy cheap chargers it is not enough to look at the connector. Many cheap chargers don’t carry, CE, RHOS, MFI approvals. These are important worldwide certifications that ensure the products are made lead free, work in mains plugs and in other devices as well as sustainable and established factories in the countries of manufacture. Devices that carry such approval usually mean that the products have clever circuitry that allow the devices to work well. So,my advice is that you should buy ur cellphone chargers from a reliable provider and reputable brand. my recommendation for u is Poweradd, u can search this in Amazon:
http://amzn.to/1mH24vy. With lots of good comments and assorted kinds of products choices, u can trust this brand.
To conserve battery life on your phone, turn off what you don’t need, optimize what you do and perform a few tasks manually instead of automating them. You can both increase the time between charges and add to your battery’s usable life.