Before updating your device
You should update the software on your device to get the latest functionality, enhancements, and bug fixes in order to ensure optimal performance. When a software update is available, 
(System update icon) appears in the status bar.
You can also check for new updates manually.
The easiest way to install a software update is to do it wirelessly from your device. However, some updates are not available for wireless download. You then need to use the Xperia Companion software on a PC or Apple Mac computer to update your device.
Before updating your device, consider the following:
- Ensure you have sufficient storage capacity.
- System and application updates can present the features on your device in another way than described in this Help Guide. The Android version might not be affected after an update.
To check for new software
- Find and tap [Settings] > [System] > [Advanced] > [Software update].
