Find "Software update"
Press the menu icon.
Press Settings.
Press About phone.
Press Software update.
Update phone software
If a new software version is available, it's displayed.
Follow the instructions on the display to update your phone's software.
Follow the instructions on the display to update your phone's software.
![Sony Xperia U Sony Xperia U](http://wmstatic.global.ssl.fastly.net/ml/7290921-2368265.png?width=480&height=480)