It's an annoying but solvable problem
Fix: Google Voice Service Waiting for Network Connection, Google Voice Service Update Issue
Are you seeing an error message “Download English US Update – Waiting for network connection” related to Speech Services by Google in your Android’s notification drawer? Read on to learn how to fix it.
Google Speech Services plays a crucial role on your Android device, delivering seamless text-to-speech and speech-to-text capabilities to native and third-party apps. However, to provide the best possible experience, it needs to download the latest language updates.
If Speech Services by Google gets stuck while downloading the latest language updates, you'll see a "Waiting for network connection" error message in the notification drawer. When that happens, there are several solutions you can try to fix the issue.