If your mobile phone number has changed, you also need to change the Phone Number in your WhatsApp Account. Below are the steps to Change your WhatsApp Phone Number on iPhone & Android.
Change WhatsApp Number Without Losing Contacts
Before going ahead with the steps to Change your WhatsApp Phone Number, make sure that your New Phone Number is active and that you can receive Calls and SMS Text Messages on your New Phone Number. Below are the steps to Change your WhatsApp Phone Number on iPhone & Android.
1. Open WhatsApp and tap on the Settings tab in the bottom menu.
If you are on an Android Phone, tap on the 3-dots icon (top-right corner) and select the Settings option in the drop-down menu.
2. From the Settings screen, go to Account > Change Number and tap on the Next option, located in the top-right corner.
3. On the next screen, enter your Old Phone Number, New Phone Number, and tap Next.
WhatsApp will now send a verification code to your New Phone Number.
4. On the next screen, enter the Verification Code and wait for WhatsApp to verify the New Phone Number.
Note: You can tap on the Call Me option to receive a verification code via an automated call from WhatsApp to your New Phone Number.
Once the verification process is completed, all your WhatsApp Messages and Contacts will be transferred to your New Phone Number.
What Happens When You Change WhatsApp Number
Your WhatsApp Contacts will no longer be able to see your Old Phone Number in their lists of WhatsApp Contacts.
All your WhatsApp Data, including your Profile, Groups, Chat history, and Account Payment Status, will be migrated to your New WhatsApp Account.
This is important because WhatsApp will be sent a 6-digit verification code to your Phone Number via SMS Text Message or by making an automated call to your New Phone Number.