Change WhatsApp Phone Number without changing any settings
WhatsApp use a user’s phone number for authenticating your account. With this, you will be able to send text, pictures, files and even make calls. But the problem is when you change the number. You might need to uninstall the existing WhatsApp and install a new version of WhatsApp with the new number. Even though you don’t have to start adding contacts again, you need to contact group admin to re-join a group. Also your contacts wont be able to see your new number looking at your WhatsApp profile.