How can you change WhatsApp number without SIM card?

Changing your WhatsApp number without a SIM card involves a few additional steps compared to the usual method. Here's how you can do it:

### Pre-requisites:
- **WhatsApp Account**: You must have an existing WhatsApp account with the old phone number (which requires a SIM card for verification).
- **New Phone Number**: You need a new phone number that you want to switch your WhatsApp account to.
- **Access to WhatsApp App**: Ensure you have the WhatsApp app installed on your device where you want to switch the number.

### Steps to Change WhatsApp Number without SIM Card:

1. **Verify New Number on Old Device**:
   - Insert the new SIM card with the new phone number into your old device (where WhatsApp is currently active).
   - Open WhatsApp and go to **Settings** > **Account** > **Change Number**.
   - Enter your old phone number (current WhatsApp number) in the top field, and the new phone number (the one you want to switch to) in the bottom field.
   - Tap **Next**.

2. **Verification Process**:
   - WhatsApp will prompt you to verify the new number by sending an SMS to that number. Since you don't have access to the SMS on the new SIM yet (because it's not in the old device), choose the option to verify via **Call**.
   - You will receive a call on the new number with a verification code. Enter this code into WhatsApp to verify the new number.

3. **Completing the Change**:
   - Once verified, WhatsApp will transfer your account information, including your groups and settings, to the new number.
   - This process may take a few moments, after which your WhatsApp account will be registered with the new number.

4. **Setup on New Device (if applicable)**:
   - If you want to use WhatsApp on a new device with the new number, install WhatsApp on that device.
   - During setup, verify your new number using the same steps: select **Call** for verification, and enter the verification code received via call.

5. **Notification to Contacts**:
   - WhatsApp will notify your contacts about your new number automatically. They will see your new number in their contact list.

### Important Notes:
- Make sure you have access to both the old and new devices during this process.
- The process involves briefly inserting the new SIM into the old device for verification purposes only. After verification, you can switch the new SIM back to your desired device.
- WhatsApp will transfer your account information, including chat history, to the new number automatically.
- If you use WhatsApp Web, you'll need to log back in using the new number after completing the change.

By following these steps, you can successfully change your WhatsApp number without a SIM card. It's a straightforward process, but requires careful handling of both devices and verification codes.