Symptoms
- Voicemail notification doesn't appear for missed calls
- Voicemail app shows an error message
- Can't dial into voicemail
- Setup wizard won't complete
Likely causes
- CommonVoicemail box is fullCarriers cap the number of stored messages, blocking new ones once full.
- CommonVoicemail app cache or data issueA corrupted cache in the carrier's voicemail or visual voicemail app can break notifications.
- PossibleIncorrect voicemail number in phone settingsIf this number is wrong or blank, the phone can't connect to voicemail at all.
- PossibleWeak signal or no data connectionVisual voicemail apps need a data connection to sync new messages.
- Less commonCarrier account issueA plan or billing issue can disable voicemail service on the account.
What to do
- Delete old voicemail messages to confirm the mailbox isn't full.
- Go to Settings > Apps, find the voicemail or carrier app, and clear its cache (not data, to avoid losing saved greetings).
- Check Settings > Call Settings > Voicemail > Voicemail Number to confirm it matches your carrier's number.
- Restart the phone to refresh the cellular and data connection.
- Try dialing your own number or your carrier's voicemail access code directly to check for messages manually.
- Toggle Airplane Mode on and off to reset the network connection.
- Update the carrier or voicemail app from the Play Store if an update is available.
- If none of this works, contact your carrier, since voicemail setup is usually managed on their servers.
When to call a pro
If voicemail remains broken after clearing cache and checking settings, your carrier needs to fix it from their end.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.