Download Blackberry Desktop Manager for either PC or MAC.
→ Double click on the “.exe” file and install Blackberry Desktop Manager.
Then, download Mini Opera.
→ Choose your phone model.
→ Download Opera Mini and save the “ZIP” file onto your Desktop.
→ Locate the “ZIP” file on your Desktop.
→ Right-click on the file and click “Extract All”.
Go to the Blackberry Desktop Manager.
→ Go to applications and import files.
→ Find Opera Mini and click on Plus (+) symbol to the Far Right and install.
→ The application summary should be at the very bottom of the screen.
→ Please make sure the Opera Mini reads and says install next to the application.
→ Apply all settings and sync. (*If you receive an error message when you apply. Click on the screen again to refresh it and the Opera Mini should appear in the installation list.)
Once installed, go to Blackberry Downloads file and install Opera Mini.
Please make sure you check that Wi-Fi is turned off and all your At&t service books are deleted.
→ Options > Advanced Options > Service book
Go to Options > Advanced Options > TCP/IP. Be sure there is a check mark for APN Setting Enable and for the APN type att.mvno.
→ Make sure that APN Authentication is NOT checked.
→ Then, click on Blackberry Menu Button and save.