You can migrate your existing WhatsApp Business App number to the WhatsApp Business API without losing the number, your chat history, or your contacts' ability to reach you. With Meta's coexistence feature, you can run both the Business App and the API simultaneously — your physical phone keeps working, your existing chats stay accessible, and your Intelli inbox handles the same number at the same time.
Why Businesses Migrate from the App to the API
The WhatsApp Business App is the right starting point. It is free, quick to set up, and works for small teams managing moderate conversation volumes. The limitations become apparent quickly:
Broadcasts only reach contacts who have saved your number. There is no AI automation for after-hours enquiries. Multiple agents cannot share the inbox properly. There are no analytics on message performance. There is no CRM integration.
The moment any of these limitations is actively costing your business — missed enquiries, failed campaigns, team communication gaps — moving to the API becomes the right decision.
For the complete comparison of what changes, see our WhatsApp Business App vs API guide.
Two Ways to Move: Coexistence or Full Migration
Before starting, decide which approach fits your situation.
Coexistence: Your number runs on both the WhatsApp Business App and the API simultaneously. Your physical phone keeps working exactly as before — existing chats remain accessible, you can still use the app, and your Intelli inbox receives and sends on the same number at the same time. This is not just a transitional feature; many businesses operate in coexistence as their permanent setup. It is the approach that involves the least disruption.
Full migration: The number moves entirely to the API. The WhatsApp Business App stops working for that number. Existing chat history stays on your device but is no longer active. Choose this only if you want a clean break and have no reason to keep the app running.
Before You Begin: The Prerequisites
1. A verified Meta Business Manager account
The WhatsApp Business API is accessed through Meta Business Manager. You need a verified account at business.facebook.com before you can register a number on the API.
Verification requires your business registration certificate, a domain email address matching your business website, and your business address. Meta typically reviews documents in 2 to 5 business days when documents are correct. A name mismatch between your Meta Business Manager name and your registration certificate is the most common delay.
2. A WhatsApp API platform account
Sign up for Intelli at intelliconcierge.com. This is where your inbox, AI assistant, broadcast tools, and analytics will live.
3. Back up your chats (for full migration only)
If you are doing a full migration rather than coexistence, back up your chat history before starting. In coexistence, this is not necessary — your chats remain accessible on your phone throughout.
On Android: Go to Settings, then Chats, then Chat Backup. Enable Google Drive backup and run a backup.
On iOS: Go to Settings, then Chats, then Chat Backup. Tap "Back Up Now" to save to iCloud.
4. Disable two-step verification on the Business App
Go to Settings, then Account, then Two-Step Verification, and disable it before starting. This applies to both coexistence and full migration.
Setting Up Coexistence
Coexistence is enabled during the number registration process in Intelli. When you enter your existing Business App number in your Intelli dashboard, you will be prompted to confirm that the number is currently active on the Business App. Intelli's setup flow then connects the number to the API while keeping the Business App active.
Once coexistence is in place:
Inbound messages arrive in both your Intelli inbox and your WhatsApp Business App
You can respond from either
Your existing chat history on your phone is fully intact
Your team can work from the Intelli inbox while you continue using the app on your phone
All API features — broadcasts, AI assistant, templates, analytics — are immediately available through Intelli
Coexistence setup can be slightly more complex than a full migration because the number remains connected to both the WhatsApp Business App and the API simultaneously.
See our dedicated guide: WhatsApp Coexistence: How to Use One Number on Both the App and the API
The Full Migration Process (if not using coexistence)
Step 1: Log into your Intelli account and navigate to the number setup section.
Step 2: Enter the phone number you are migrating. The system will confirm it is currently active on WhatsApp.
Step 3: Request the verification code via SMS or voice call. Once requested, the number begins migrating. The WhatsApp Business App will stop working for that number shortly after. Do not request the code until you are ready to complete the migration in one session.
Step 4: Enter the verification code in your Intelli platform to register the number on the API.
Step 5: Set your display name. This is what customers see in conversations. Meta reviews display names and most are approved within 24 hours.
Step 6: Configure your platform — AI assistant knowledge base, team inbox, message templates, contact list, and any integrations.
After Setup: What to Prioritise in the First 48 Hours
Whether you chose coexistence or full migration:
Get at least one message template approved. You cannot send business-initiated messages until you have an approved template. Submit a simple utility template first — an appointment reminder, order confirmation, or welcome message. See our template approval guide.
Note: For newly created WhatsApp Business API accounts, Meta may take longer to approve the first 2–3 message templates while the account establishes initial trust and review history. Initial approvals can take up to 24 hours per template. After those first templates are approved, correctly formatted templates are often approved within minutes on Intelli, though approval times ultimately depend on Meta’s review systems.
Set up your AI assistant knowledge base. Upload your FAQs, product information, and common customer questions so the AI can handle inbound enquiries immediately.
Test inbound messaging. Send a message to your number from a personal phone to confirm messages are arriving correctly in your Intelli inbox.
Import your opted-in contact list. Upload your broadcast contacts.
Frequently Asked Questions
Will my contacts notice any difference? No. The phone number stays the same. Contacts who have it saved continue to see your business name. The change is entirely on your side.
Will I lose my chat history? Not with coexistence — your chats remain on your phone and the app keeps working. With full migration, your chat history stays on your device but is no longer active in the app once the number is disconnected.
Can I go back to the WhatsApp Business App after a full migration? Yes. The migration can be reversed by removing the number from the API and re-registering it on the Business App. In practice, most businesses that migrate do not go back.
How long does the process take? Full number registration typically takes 5 to 10 minutes once your Meta Business Manager is verified. Coexistence setup can take slightly longer because the number remains connected to both the WhatsApp Business App and the API simultaneously. The prerequisite step — Meta Business Manager verification — typically takes 2 to 5 business days. Intelli's onboarding team guides you through the full process.
What if my number registration gets stuck? The most common cause is a two-step verification PIN that was not disabled before starting. The second most common cause is a Meta Business Manager verification that is still pending. Contact Intelli's support team if you encounter issues.
Intelli's onboarding team guides you through the full process — coexistence or full migration. Start your 7-day free trial — no credit card required.
