WhatsApp Hijacked Through My Voicemail: How Did They Get the Code and How Do I Get Back In?

WhatsApp hijacked through voicemail? How attackers grab codes from voicemail, how to get your account back, and how to lock voicemail down.

Md Shariar Shanaz ShuvonMd Shariar Shanaz ShuvonFounder & CEO, AwareXone
2 min read
Cover card with a voicemail and padlock icon, for WhatsApp accounts hijacked through voicemail.
Short answer

Attackers can hijack WhatsApp by requesting a voice-call code while your phone is busy or off, so the code goes to voicemail, then accessing the voicemail with a default PIN. To get back in, reinstall WhatsApp and verify your number with an SMS code. Then set a strong voicemail PIN and turn on two-step verification.

Summary
  • Voice-call codes can go to voicemail.
  • Default voicemail PINs are easy to guess.
  • Re-verify your number to kick the attacker out.
  • Set a strong voicemail PIN or turn voicemail off.
  • Turn on two-step verification.
Table of contents5 sections
  1. 01How does it work?
  2. 02How do I get back in?
  3. 03How do I protect voicemail?
  4. 04What common mistakes should I avoid?
  5. 05When should I ask an expert before I act?

The Cyber Security Agency of Singapore has warned about this route. Here's how it works.

Last checked: 29 October 2026 against the sources listed at the end of this guide.

#How does it work?

  1. The attacker requests a code for your number by voice call.
  2. The call goes to voicemail.
  3. They log into your voicemail with a default PIN.
  4. They read the code and take over WhatsApp.

#How do I get back in?

  1. Reinstall WhatsApp.
  2. Verify your number by SMS.
  3. If asked for a two-step PIN you didn't set, wait 7 days, then re-verify.
  4. Warn your contacts.

#How do I protect voicemail?

StepWhy
Change the voicemail PINStops access
Disable voicemailNo code to grab
Two-step verificationBlocks re-registration

Related guides: WhatsApp Says "Try Again in X Hours" for My Code: Is My Number Blocked?, WhatsApp "Security Code Changed": Has Someone Cloned My Number?, Someone Removed Me as WhatsApp Group Admin: Can I Get Control Back?.

#What common mistakes should I avoid?

  • Keeping the default voicemail PIN.
  • Skipping two-step verification.
  • Not warning contacts.
  • Sharing codes with 'friends'.

#When should I ask an expert before I act?

Ask for help before you appeal if the account matters to your income, your business or your memories, if you have already had one appeal rejected, or if you cannot tell whether the problem is a bug, a restriction or a hack. That is where most avoidable losses happen.

AwareXone has solved 1,300+ cases and works only through official platform processes. Support is available 24 hours, every day. We never ask for your password, login codes or backup codes, and we never name our clients. Request a free case review or message us on WhatsApp. Malaysian cases are priced in MYR; other markets are quoted in USD after review.

AwareXone is independent and not affiliated with Meta, Instagram, Facebook, WhatsApp or Threads. Recovery work is best-effort and the platform makes the final decision.

Do I need to contact my carrier?
To change or disable voicemail, yes.
Can the attacker read old chats?
Not usually without a backup.
Should I report to police?
If money was lost, yes.
Can you help?
Yes, a free review.
Can AwareXone check my case before I appeal?
Yes. AwareXone offers a free case review. Send us what you see on screen and what you have already tried, and an expert will tell you whether to appeal, wait or take another route. We never ask for your password or codes.

Official sources

More free guides on the same kind of problem.