Testing the iPhone battery is something that requires expertise that the ordinary user of iPhones may not have, which means that one is then dependent on needing to read up reviews of how well or badly does the iPhone battery work. It certainly pays to do some legwork before buying your iPhone as you do not want to end up with something that is going to fall short of your expectations and which may cause you disappointment as well. Thus, before you actually purchase your iPhone makes sure to check out the many reviews that are available regarding the working of the iPhone battery among other features.
A possible reason why the iPhone battery life falls far short of its listed times could be the heavy amount of power that is consumed by its giant screen though it could also be because of improper charging of the battery and also because the batteries them are faulty. In any case, it pays to find out these things well before the actual purchase.
There is no doubting the fact that iPhone testers were less than impressed with the Apple iPhone battery life , and instead of a promised eight hours of talking and six of internet use, according to tests these times were greatly exaggerated and actual battery life was no more than four to five hours, which is what you could expect from smartphones. This is a reason to be concerned because four to five hours of battery light would not serve you if you happened to be on an international journey and were in the air for ten plus hours and needed to talk to someone during the flight. It would also not be very good for watching videos that are sure to drain the iPhone battery sooner than expected.