Information regarding game crashes on specific Android devices for Warcraft Rumble and Hearthstone

What to do if the website returns "Connection Error" when adding a phone number

Before you can connect to the game servers, you must add a phone number to this account.

Information on contacting Activision Support

How to troubleshoot the error, "We found an existing game on your account...", for Warcraft Rumble

Troubleshooting steps for communication and transmission errors.

Troubleshooting for Diablo Immortal connection issues on mobile devices.

Troubleshooting for Warcraft Rumble connection issues on mobile devices.

This download isn't authorized by the Blizzard Tracker. Please contact Customer Support.

Troubleshooting steps for problems installing or patching Diablo Immortal