If you don’t mind voiding your warranty, rooting can breathe new life into an ancient Android phone. We’ve described how to root your Android phone countless times in the past, so you can refer to one of those guides when you’re ready to walk through the actual process. A rooted phone gives you complete control over your Android device: You can remove unwanted bloatware, install root-only applications, and even load custom ROMs that change the look and feel of Android on your phone.
Another benefit of rooting is that you no longer have to depend on your carrier for Android updates. While everyone else is waiting for their phone to receive Android 4.0, you can probably find a ROM for your phone that will give you a taste of Ice Cream Sandwich a few weeks or months before the update officially appears.
Rooting isn’t without its hazards, however, and a serious mistake can render your phone unusable. In my opinion, though, the benefits are worth the risks, especially if you have an older Android phone; it’s definitely an option you should consider if you aren’t satisfied with your current Android situation.