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    WhatsApp Phone Number Already Registered with Another Platform

    During Envoy onboarding, you see: "This phone number is already registered with the INBOX product."

    2 min readUpdated 9 Apr 2026
    General WhatsApp guide available at /learn/whatsapp

    This means your number is still connected to another WhatsApp Business API platform. (Wati, Respond.io, Trengo, etc.)

    Step 1: Disconnect from the Current Platform

    1
  1. Log into your current WhatsApp platform (e.g., Wati)
    2. 2
  2. Go to their WhatsApp settings
    3. 3
  3. Disconnect or deregister the phone number.
    4. 4
  4. Important. Confirm the number is fully deregistered. Some platforms have a "disconnect" that doesn't fully release the number.

    5. Step 2: Wait for Release

    After disconnecting, wait 5-10 minutes for Meta to release the number from the old platform.

    Step 3: Onboard in Envoy

    1
  5. In Envoy, go to Settings > Channels > Add Channel > WhatsApp
    6. 2
  6. Follow the Embedded Signup flow
    7. 3
  7. Select your phone number
    8. 4
  8. Complete the setup

    9. Several Envoy customers have migrated from Wati. Key notes:

    • Message history won't transfer automatically. Wati doesn't provide an API export. History migration requires manual steps (QR code scanning, tampermonkey script export). Contact support if you need history preserved.
    • Templates need to be recreated. Your Wati templates won't carry over. Create new templates in Envoy or via Meta WhatsApp Manager.
    • Contacts transfer via CSV. Export your contact list from Wati and import into Envoy.
    • Automations and chatbot flows need to be rebuilt manually in Envoy. Screenshot your Wati flows before disconnecting.

    The previous platform may not have fully released the number. Contact the old platform's support to confirm deregistration, or wait 24 hours and try again.

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