Step 1: Click on the "Profile" icon at the top right and select "Settings".

In the Settings page, look for the "Account Settings" section and click on the "Login & Security" option.
Locate the "Change Phone Number" section. Enter your current phone number and your desired New Phone Number. Click on "Send OTP" to receive a verification code on your new mobile number. Enter the OTP to confirm the change.

That's it! Your registered phone number will be updated immediately after verification.