Cell phone batteries slowly degrade over time. You will see a diminished iPhone battery after 300-400 charge cycles. Apple offers a seventy-nine dollar battery replacement program. This option will result in you not having a phone for upwards of a week. The cheapest option would be to order an iPhone compatible battery from the Internet for as little as seven dollars and install it yourself. However, Your iPhone's casing is sealed and is not meant to be opened. If you do so, your warranty will be voided.
iPhone Battery Replacement Program
Bring your iPhone into any Apple store, and they will replace your diminished battery with a brand new one. Having your battery replaced by professionals is the best option if you have the funds. This option is available to consumers whose iPhone is out of warranty. If your battery is not performing within a year of purchase, your iPhone is still under warranty and your battery will be replaced free. That is, if the problem was not caused by damage you did to your phone.
DIY Battery Replacement
To replace your iPhone battery yourself you will need an iPhone case opener tool kit. Use a mini-Phillips head screwdriver to loosen your iPhone's case. Then, pry the casing open using the crowbar-like tool. Once open, you will have to unhook certain belts and wires to remove your phone's motherboard. Your battery is located under the motherboard. The "Rapid Repair" website has a very detailed tutorial on replacing your battery. If you feel tech-savvy enough to take on this task, follow their guide carefully. Note that opening your iPhone will void your warranty. Apple constructed its iPhones as sealed devices, and they are not meant to be opened by anyone other than an Apple professional
Warning
Apple produces iPhones in a sealed, bacteria free environment. Your iPhone is a mini computer, so this is a extremely complex device. When you are removing your battery it is very easy to do serious damage to your phone.
Tags: your battery, your phone, damage your, damage your phone, iPhone case, iPhones sealed, meant opened