When carrying Pocket in a bag or a pocket, it is possible to inadvertently press the talk buttons. To avoid doing this, you can use the screen lock function.
The screen lock function allows you to Lock and Unlock your device. Locking your device will prevent you from pressing certain buttons, this means that the talk button will not function, nor will the touch screen menu. However, when your device is locked you are still able to change the volume using the volume buttons. Additionally when you lock your device, the screen will dim significantly.
To lock your device, press and hold the lock button for approximately 3 seconds, your device should then tell you that it is locked. You will no longer be able to press the talk button or use the touch screen menu.
To unlock your device, repeat the same process by holding the lock button down for approximately 3 seconds, your device should then tell you that it is unlocked. At this point you should have full, normal control of your device.
This function can be useful when you want to put your device in a pocket or a bag, or in other situations where you may accidentally press the talk button. For example you might want to listen to a book through a headset, leaving Pocket in a bag. In this situation you may want Pocket to be locked in order to avoid the talk button accidentally being pressed by objects in your bag as you listen. To do this you could first ask Pocket to start playing you a book, and once playback has started, you can lock your device. This would allow you to listen to your book without needing to worry about accidentally pressing the talk button, while still allowing you to change the volume as you please.