How to Replace an iPhone Battery
Step 1. Check the Battery Lifespan
Nothing lasts forever. Including an iPhone’s battery. You can’t expect it using even for few years. Unfortunately, the battery lifespan in the terms of regular use is not long-lasting. However, before you will learn how to replace an iPhone battery you need to find out how to check the battery lifespan.
Many iPhone users confuse the terms” the battery life” and “the battery lifespan”. The battery life denotes the time required before a phone has to be recharged while the battery lifespan referrers to the total time of the battery activity until it has to be replaced with a new one. You can check the statistics of the iPhone’s battery use by clicking on Settings, then General Tab and the option Usage. Also check the option “Time since the last full charge”.
Different models of an iPhone have different battery lifespan rates. For instance, iPhone 4S’ battery can work without replacement up to 4 hundred full charge cycles (1 cycle counts from 0 % to 100%).