Samsung SPH-L720ZKASPR - Manual (Page 136)

Update Your Phone
Use System Updates to update your phone's software, firmware, PRL (preferred roaming list),
and more.
1. Press and tap > Settings > More.
2. Tap System Update to use these options:
 Update PRL: Download and the latest Preferred Roaming List (PRL), used by your
phone to access the network.
 Update Profile: Update the user profile related to your wireless service account. If
you choose to change your user name online, use this option to update the user
name on your phone.
 Update Samsung Software: Upgrade to the latest software available for your
device.
 Update Firmware: Update your phone’s firmware. Follow the prompts to download
and install the update.
 UICC Unlock: Unlock your device’s Universal Integrated Circuit Card.
Tools and Calendar 123