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It's recommended that you update your phone with the newest software, as the manufacturer continuously corrects errors. It's a good idea to back up the phone memory first. Before you can update the phone software, you need to set up your phone for internet.
1. Find "System & updates"
Press System & updates.
2. Update phone software
Press Software update. If a new software version is available, it's displayed. Follow the instructions on the screen to update the phone software.