How to Control the Lock Timeout on Your Amazon Fire Phone
If you ignore your Fire phone for a while, or if it just becomes painfully bored, it automatically locks. The normal delay length is about one minute, although you can adjust that value. You simply change the lockout time by obeying these steps:
At the Home screen, swipe up the screen to view the App Grid.
Open the Settings app.
Choose Lock Screen.
Choose Change the Automatic Lock Time.
You see a screen like this.
Select a timeout interval.
The standard value is one minute.
Press the Home button to return to the Home screen.
The lock timer measures inactivity. When you don’t touch the screen or press a key, the timer starts ticking. A few seconds before the timeout value you set, the touchscreen dims. Then the phone locks. If you touch the screen before then, the timer is reset.
The lock timeout is similar to Sleep mode on a computer. As on a computer, when the Fire phone is locked, it uses less power and the screen is off. However, it is easy to access and you don’t have to wait for it to boot up again.