One of the most important tips provided by users and experts alike is to regulate the temperature in which the iPhone operates. The lithium-ion (Li-ion) battery of the iPhone functions best in temperatures ranging from 32 to 95 degrees Fahrenheit, or 0 to 35 degrees Celsius. At its extremities, the iPhone can still function between -4 and 113 degrees (-20 to 45 degrees Celsius) but temperatures beyond these ranges is going to be detrimental to your iPhone battery. In other words, leaving your iPhone in a freezer or in a warm car is probably not recommended. Keep it out of direct sunlight as well.- android
This next tip culled from forums and the like is not so clear-cut. There are some who claim that allowing the iPhone battery to completely discharge more than once monthly is not advisable, although some believe that no harm may come of it. What has a consensus would be that the iPhone battery must be fully discharged from a full a discharge monthly in order to reset battery meter.
It is also beneficial to have an idea of your actual usage along with your battery life in order that you can more completely understand your options. You can view your usage statistics in the Settings Menu underneath the General Tab then Usage. You will notice Usage, which is the time how the iPhone was in active mode therefore you were on a call, watching a video, listening to music, browsing the web, and so on. It will also show your Standby time, which is the total amount of time the iPhone may be running from its last full charge, whether in active mode or otherwise not. Usage divided by Standby time will provide you with a percentage of the time you had been actively using your iPhone. The higher this percentage, the more often you will need to charge your iPhone, so plan accordingly.
Updating towards the latest official sort of the software using iTunes may help you with taking care of the iPhone battery, but that's still up for grabs. Quite a few users complain that the update from three to 3.1 wreaked damage to some applications. However, updates and patches are meant to help improve the performance, so maybe that last one was obviously a bit of a fluke. At any rate, before updating your software, browse the forums to see exactly what the feedback is from individuals who have already updated their software.
As well as, the old standby of using on the applications you will need, turning off push, 3G and decreasing the brightness of the display and so forth are still part and parcel of maintaining your iPhone battery in good condition for a longer period. Just because you've heard it before does not mean it doesn't work.
New things, though. Some users have seen that proximity with a cell tower (thus providing usage of a strong signal) extends battery life. This may be because network searching is brought to a minimum. So attempt to stay in areas with an above average signal. A last and final tip is to apply your iPhone regularly, so you massage the kinks out of the system and become familiar with the peculiarities of your particular unit. All things considered, your phone is really a highly personal gadget, and really should be treated as a result.- android