For you that have Xperia U i have good news for you. Now you can root xpeia u without unlock bootloader so it means you will not void the warranty. That is such a interisting guide right? Ok but before we start the tutorial you must read all and make sure you did the step by step insrtuction correctly so you will success root you phone. This root tutorial is for Xperia U user that have upgraded to android Ice Cream Sandwich ROM. I know that there are many xperia u user that still confuse and try seacrh for the tutorial in the internet but hard to find the instruction that complete, easy, and without unlock bootloader to understand. So to solve those problem i make this tutorial based with my experience when i help my friend to root xperia u on ics . Also, after obtaining the ROOT, we will see how to customize the notifications bar to the Xperia U by adding useful toggle to change the system settings on the fly. Point out, before we begin, that driving with the QuickPanel run...