​To update your mobile number linked to your Emirates ID, you can utilize the Federal Authority for Identity and Citizenship (ICA) Smart Services portal. Begin by visiting the ICA website, logging in with your Emirates ID credentials, and navigating to the "Update Mobile Number" section. After entering your new mobile number, you'll receive a One-Time Password (OTP) for verification. Upon confirmation, a fee of AED 53 is applicable, and the update typically processes within 2 to 7 working days. Alternatively, you can perform this update through the ICA mobile app or by visiting an ICA service center. For a detailed, step-by-step guide, refer to the comprehensive article on how to change the mobile number on Emirates ID.​