Samsung SGH-T989AABTMB - Manual (Page 220)

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Credential Storage
This option allows certain applications to access secure
certificates and other credentials. Certificates and credentials
can be installed to the SD card and password protected.
1. Press ➔ and then tap (Settings) ➔
Location and security.
2. Tap Use secure credentials to activate this feature. A check
mark displayed next to the feature indicates secure
credentials is active.
3. Tap Install from USB storage to install encrypted certificates
from the USB Storage location.
4. Tap Set password to set or change the credential storage
password.
5. Tap Clear storage to clear the storage (SD card or phone
memory) of all contents and reset the credentials
password.
Applications
This phone can be used for Android development. You can write
applications in the SDK and install them on this device, then run
the applications using the hardware, system, and network. This
feature allows you to configure the device for development.
Warning!: Android Dev Phones are not intended for non-developer
end-users. Because the device can be configured with system
software not provided by or supported by Google or any other
company, end-users operate these devices at their own risk.
Unknown Sources
Before you can download a web application you must enable the
Unknown sources feature (enables downloading). Developers can
use this option to install non-Market applications.
1. Press ➔ and then tap (Settings) ➔
Applications.
2. Tap Unknown sources to active this feature.
Note: If you are notified that you can not download a Market application
because it comes from an “Unknown source”, enabling this option
corrects this issue.