How to Fix Voicemail That Is Not Working on Your Phone

Published 2026-10-16 · Marion Phone Repair

People call you and say they could not leave a voicemail, or you know someone left a message but it never shows up. You call your voicemail and get an error, a busy signal, or a message saying the mailbox is not set up even though you set it up before. Or visual voicemail in the phone app shows nothing while you know messages are waiting. Voicemail problems are caused by a full mailbox, incorrect setup, carrier settings, call forwarding issues, or a network problem.

Check if voicemail is set up

Voicemail sometimes needs to be initialized or re-initialized, especially after getting a new phone, changing carriers, or after a phone number port:

Basic voicemail setup

Open the Phone app and long-press the 1 key (this is the voicemail speed dial on most phones). If you hear a setup wizard, follow the prompts to create a PIN and record a greeting
If long-pressing 1 does not work, dial your own phone number from your phone. This should connect you to the voicemail system. Follow any setup prompts
If neither method works, call your carrier's customer service and ask them to reset your voicemail. Carrier-side resets clear any stuck configuration and let you start fresh

Visual voicemail setup

iPhone: Open the Phone app, tap the Voicemail tab at the bottom. If it says Set Up Now, tap it and create a voicemail PIN. If it says Call Voicemail instead of showing a visual list, visual voicemail may not be activated on your carrier plan — contact your carrier
Android: Visual voicemail availability depends on the carrier and phone model. Open the Phone app and look for a Voicemail tab. If there is no visual voicemail tab, your carrier may require a separate visual voicemail app (T-Mobile Visual Voicemail, AT&T Visual Voicemail, etc.) from the app store

Check if the voicemail box is full

A full voicemail box is the most common reason callers cannot leave messages:

Call your voicemail (long-press 1 or dial your own number) and listen to the main menu. The system usually tells you how many messages you have
Delete old messages you have already listened to. Most voicemail systems keep messages for 14 to 30 days, but saved messages can accumulate and fill the box
Carrier voicemail boxes typically hold 20 to 40 messages depending on the carrier and plan. When full, new callers hear a message saying the mailbox is full and cannot leave a voicemail
After deleting messages, have someone call you and test if they can leave a voicemail

Check call forwarding settings

Voicemail works through call forwarding — when you do not answer a call, the carrier forwards it to the voicemail system. If call forwarding is misconfigured, calls may not reach voicemail:

Android

Open the Phone app, tap the three-dot menu, Settings, Calling Accounts (or Call Settings), Call Forwarding
Check the settings for: Forward When Unanswered, Forward When Busy, Forward When Unreachable
These should be set to your carrier's voicemail number. If they are blank, set to a different number, or turned off, voicemail will not receive forwarded calls
If you do not know the voicemail number, contact your carrier. You can also try resetting call forwarding with carrier codes: dial ##004# and press call — this resets all conditional call forwarding to carrier defaults on most GSM carriers

iPhone

Settings, Phone, Call Forwarding — make sure this is turned off (unless you intentionally forward calls elsewhere). The Call Forwarding setting here is unconditional forwarding, meaning all calls go to the forwarded number, bypassing voicemail entirely
Conditional forwarding (forward when busy/unanswered/unreachable) is managed by the carrier, not in iPhone settings. If these need resetting, dial ##004# or contact your carrier

Do Not Disturb and call screening

Features that silence or block calls can prevent voicemail from activating correctly:

Do Not Disturb: DND silences calls but should still send unanswered calls to voicemail after the ringtone plays. However, if DND is set to Silence Unknown Callers (iPhone) or Block calls from unknown numbers, calls may be rejected immediately without ringing, and some carrier voicemail systems do not activate on immediately rejected calls. Disable DND temporarily and test
Call Screen (Google Pixel): Call Screen on Pixel phones can answer and screen calls automatically. Screened calls that are declined may or may not reach voicemail depending on how the screening resolves. Check Phone app, Settings, Call Screen settings
Spam filter: Carrier spam filters (AT&T ActiveArmor, T-Mobile Scam Shield, Verizon Call Filter) can block calls before they reach your phone. Callers blocked by spam filters do not get sent to voicemail — the call just ends. Check your spam filter app's blocked call log

Network and carrier issues

Network registration

Toggle Airplane Mode on and off to force the phone to re-register with the carrier network. Voicemail notifications are pushed through the carrier network, so a stale network registration can prevent notification delivery
Restart the phone for a full network reconnection

Carrier settings update

iPhone: Settings, General, About — if a carrier settings update is available, a prompt appears. Carrier settings updates include voicemail routing configuration. Install any available update
Android: Carrier settings updates are usually included in system updates. Check Settings, System, Software Update

Carrier-side voicemail reset

If nothing else works, call your carrier and ask them to reset voicemail on your line. The carrier can deactivate and reactivate voicemail on the backend, which clears any stuck configuration on their servers. You will need to set up voicemail again after the reset (create PIN, record greeting)

Visual voicemail not showing messages

If basic voicemail works (you can call in and hear messages) but visual voicemail in the phone app shows no messages or errors:

Mobile data required: Visual voicemail requires a mobile data connection to download message audio and transcriptions. If mobile data is off or you are on Wi-Fi only, visual voicemail may not update. Turn on mobile data and check again
Visual voicemail app needs update: Check the app store for updates to your visual voicemail app or the carrier app that provides visual voicemail
Visual voicemail not included in plan: Some carrier plans do not include visual voicemail by default, especially prepaid plans. Basic voicemail (dial-in) works, but the visual interface requires the feature to be activated. Contact your carrier to add visual voicemail if needed
Reset visual voicemail: On iPhone — Settings, Phone, Change Voicemail Password — change the PIN, then reopen the Voicemail tab. On Android — clear the voicemail app's cache and data (Settings, Apps, Phone or Voicemail app, Storage, Clear Cache and Clear Data), then reopen and set up visual voicemail again

Third-party voicemail services

If you use a third-party voicemail service like Google Voice, YouMail, or HulloMail, the setup is different from carrier voicemail. These services work by forwarding your unanswered calls to their own number. If the forwarding is removed (by a carrier update, a phone reset, or an accidental setting change), the service stops receiving your voicemails
Reconfigure the forwarding in the third-party app or manually set call forwarding to the service's access number

Voicemail repair in Marion

If your phone voicemail is not working and the troubleshooting above did not fix it, Marion Phone Repair can diagnose whether the issue is a voicemail setup problem, a carrier configuration issue, a call forwarding error, or a network problem, and restore your voicemail so callers can leave messages and you can retrieve them.