When you change your phone number, all of your previous conversations are erased. It will also remove the account connected with your former phone number, so your contacts will no longer be able to view it in their WhatsApp contact list.
It is not possible to deactivate WhatsApp on a different device. If you backed up your phone using Google Drive, iCloud, or OneDrive before it went missing, you might be able to retrieve your chat history.
To add a new phone number, tap the “New” button and type in your desired number. In the upper text box, input your old phone number. In the lower text box, input your new phone number. At the top of the screen, click Done.
After that, follow these steps: Hold down the message (or messages) to select it. Tap on the Trashcan button with a trashcan icon to delete it.
How to Manage Two WhatsApp Accounts on the Same Phone Are you facing difficulties when using multiple WhatsApp accounts on one smartphone. If you already have a WhatsApp account on your phone, go to and bypass it.: Open the Dual App Clone app App Twin in your Android settings menu.