Sony SVT1121 How To Use Manual page 140

To rotate an image such as a photo (rotate)
Put two fingers on the touch screen and slide them in circles to rotate an image, such as a
photo. You cannot rotate images depending on the apps you are using.
To select by swiping
Slide your finger in short distance in the direction that the screen does not scroll.
You can select an item, such as an app tile or a picture.
About Built-In Sensors
A built-in accelerometer, digital compass (magnetometer), and gyro sensor enable you to use
the following functions.
Screen rotation using the built-in accelerometer