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SMARTY Voicemail Not Working on OnePlus

Last updated: June 2026 · SMARTY · OnePlus

SMARTY voicemail works via a call divert. If it has stopped, the divert has likely been cleared. This guide explains how to restore SMARTY voicemail on your OnePlus, set your PIN and access messages by calling SMARTY app → Voicemail.

In this guide
  1. Restore voicemail divert
  2. Step-by-step fix
  3. Common causes
  4. Frequently asked questions

Restoring SMARTY Voicemail on OnePlus

Dial the SMARTY voicemail number
Call SMARTY app → Voicemail from your SMARTY SIM. If the call connects and asks for a PIN, voicemail is working but the divert may need restoring. If the call fails, proceed to the next step.
Re-enable call divert for voicemail
Dial **61*SMARTY app → Voicemail*11*30# from your OnePlus phone dialler and press Call. This re-enables the voicemail divert for unanswered calls on SMARTY.
Enable divert for busy and unreachable
Dial **67*SMARTY app → Voicemail*11*30# (busy) and **62*SMARTY app → Voicemail*11*30# (phone off/no signal). This restores voicemail when your OnePlus is unavailable on SMARTY.
Reset PIN if locked out
If voicemail asks for a PIN you do not know, call smarty.co.uk live chat to reset it. SMARTY will verify your identity before resetting the voicemail PIN on your account.
Check voicemail via app
The SMARTY app or Visual Voicemail feature on your OnePlus may give direct access to messages without a PIN. Check your SMARTY app for a voicemail or messages tab.
Check number format
If using codes, ensure the voicemail number is in full UK format. Some OnePlus models require a + prefix: +44SMARTY app → Voicemail instead of 0 or just SMARTY app → Voicemail.
Contact SMARTY for provisioning
If voicemail has never worked or was recently lost after a plan change, call smarty.co.uk live chat. SMARTY may need to re-provision the voicemail service on your account.

Common Causes of This Issue on SMARTY

CauseLikelihoodFix
Divert clearedHighRe-enable with dial code
Wrong voicemail numberMediumUse correct number for carrier
PIN lockedMediumReset PIN via support

Frequently Asked Questions

What is the SMARTY voicemail number?

The SMARTY voicemail access number is SMARTY app → Voicemail. Dial this from your SMARTY SIM to check messages. If calling from abroad, dial the full international format: +44 followed by the number without the leading zero.

How do I set up voicemail on SMARTY?

Dial SMARTY app → Voicemail from your OnePlus and follow the recorded prompts to set your PIN and record a personal greeting. If voicemail is not set up, callers will hear a default SMARTY greeting. You only need to do this once.

Why has SMARTY voicemail stopped working?

Voicemail on SMARTY works via a call divert. If the divert was cleared — by a network reset, SIM swap, or firmware update — voicemail calls will ring indefinitely instead of going to the mailbox. Re-enable using dial code **61*SMARTY app → Voicemail*11*30# on your OnePlus.

Still having trouble? Contact SMARTY support on smarty.co.uk live chat or visit our contact page for further help.