Within the Device Administration section in the Security settings list, you can activate the Android Device Manager so you can lock or erase your Tab 4 from the Android Device Manager on the Google Play website (http://play.google.com).
You can set up Android Device Manager on the Tab 4 by tapping Device Administrators in the Security settings list and then tapping the Android Device Manager checkbox shown in Figure 5. After you tap the checkbox, tap the Activate button in the Activate Device Administrator window that appears on the screen.
Figure 5. Make Android Device Manager lock or erase your Tab 4 by tapping the checkbox.
Here’s how to access the Android Device Manager from the Google Play website: After you log into the website within your preferred browser, click or tap the Settings button in the upper right corner of the screen (it has a black gear icon) and then click or tap Android Device Manager from the drop-down menu. You may be asked to enter your Google account password.
In the Settings screen, you can return to the Security settings list by tapping the Back touch button. Within the Device Administration section you also see two other settings. Tap the Unknown Sources checkbox to allow installation of apps from sources other than the Google Play Store. After you tap the checkbox, the Unknown Sources window appears and reminds you that by tapping the OK button in the window, you’re responsible for any damage to your device including loss of data.
By default, the Verify Apps checkbox is checked so the Tab 4 will warn you about apps it thinks is harmful before you install them. If the Tab 4 thinks the app you want to install is so harmful that it will damage your device, the Tab 4 won’t install the app at all. If you don’t want to verify apps and take your chances, tap the Verify Apps checkbox to clear it.