Combine this with software that can clear your apps cache, freeing up precious memory, and the ability to customise your phone’s themes/icons and you can soup up your phone.
Another reason to root your phone is to load Custom ROMs. These are normally based on the default ROMs, but are tweaked to bring additional functionality, performance improvements and battery life gains to the table. Ideal, in some ways, for those unsatisfied by the standard ROM or for those older phones abandoned by their respective manufacturers.
Rooting is a process for more advanced users. Head over to xda-developers.com for the full lowdown on how to do it for your particular device.
Best Apps For Rooted Android Phones
AdFree Android
Free
As the name suggests, AdFree can remove certain types of advertisements from full websites. Not only does this save you having to view annoying ads, but it should help speed up the loading time of webpages. Ideal for slower mobile data connections.
Titanium Backup
Free (Pro version $3.99)
SetCPU
Free for XDA members or $1.99
CacheMate for Root Users
Free
Best Apps For Rooted Android Phones
Source : Android Tips, Tricks & Apps