a820t How to set screen unlock

First, set the pattern unlock
1. In the "Standby interface" click "System Settings", as shown in Figure 1-1;
2. Slide up to find and click "Safe", as shown in Figure 1-2;
3. Select "Screen lock", you can see "pattern", "password" and other ways. Click on "Patterns" as shown in figures 1-3 to 1-4;
4. Select "Pattern" lock screen mode, you can enter the setting, finish the first time to draw the pattern, select "Continue" to confirm the drawing pattern again, and then click "Confirm" to complete the setting. As shown in figures 1-5 to 1-6;

Figure 1-1

Figure 1-2

Figure 1-3

Figure 1-4

Figure 1-5

Figure 1-6
5. After the completion of the set, according to the previous set of patterns can be unlocked (note that the pattern is drawn in addition to the shape needs of the same, the drawing order also to be set to unlock), as shown in Figure 1-7.

Figure 1-7

Second, set other ways to unlock
After setting other locking modes, the sliding, pin, and password unlock interfaces are shown in Figures 2-1, 2-2, and 2-3, and choosing none means locking the screen in any way.

Figure 2-1

Figure 2-2