![background image](https://i.berrydoc.net/BlackBerry 9720/en/BlackBerry 9720_en276.png)
On the home screen or in a folder, click the Options icon.
User Guide
Applications
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![background image](https://i.berrydoc.net/BlackBerry 9720/en/BlackBerry 9720_en277.png)
2.
Click Security > Password.
3.
Select the Prompt on Application Install check box.
4.
Press the
key > Save.
Related information
Set or change your smartphone password,
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