If you're using the default theme on your Xperia, then you're missing out on one of the best themes available for the device. It's time to change things up a bit, and if you're using the latest version of the OS, then you'll have a lot of new themes to choose from.

It's easy to use, just install the app, and you'll be ready to go. If you're using a different OS, then you'll have to install the app, but that's not a problem.

If you want to use the themes on your phone, then you'll have to download the app, but that's not a problem either.

Themes are an important part of the OS, so it's important that you use them properly.