Sony has already started to release the update to version 4.4 of Android on your Xperia Z1. In addition to presenting the new features available in the new version of the operating system, the new device software update also includes improvements in camera and e-mail applications. At the same time, stability improvements and battery performance also are promised by the manufacturer.
To update the software for the internet, follow the following path: > Settings over the phone software Updates > > system updates. For best performance, we recommend that you perform the operation with a Wi-Fi connection. If you prefer, you can perform the installation by using the auxiliary device client, available on the official website of Sony.