You can essentially make your car stereo system an extension of your iPhone with this convenient device. The battery life of the iPhone 4 is preferable to average but who knows when you'll forget to charge it. Or, you might find yourself talking on the phone greater than you expected one day, and have the battery die on you. This would be an ideal time to have this next accessory known as the Juice Pack Air. This also serves as a hard shell case for your phone, and it can double the quantity of time you can spend on your iPhone without recharging. You'll easily have the ability to see what the power status of your phone is with the power indicator. iPhone 4 accessories come in many varieties, and you could easily get addicted to buying one after the other. But in reality, most people only need a handful of useful accessories, based on how they use their phones. The above iPhone 4 accessories are some popular ones, but there are certainly many others worth exploring as well. . phone tracker Have you ever forgotten to charge your cell phone? The iPhone 4 has better than average battery life but….. Or, you might find yourself talking on the phone a lot more than you expected one day, and have the battery die on you. That's why it can be useful to have something like the Juice Pack Air, an external rechargeable battery case made for the iPhone 4. This accessory can double the time you can use your phone before charging along with act as a hard protective outer shell for your phone. The status indicator included on this device enables you to always know how much power is left.