In order to start using all functions of your newly activated iPhone with Boost, you’ll need to follow a few additional steps:
Step 1. Check your iOS version.
Step 2. Return to the General page.
Step 3. Go to About. A pop-up will appear (it may take up to 30 seconds).
Step 4. Verify that the Carrier is at least Boost 49.1, and click Update.
If you brought your own device to Boost Mobile: