Change or add a mobile phone number for your account with an IOS device.
Step1: Click on the symbol in the lower right corner of the phone.
Step 2: Scroll down and choose “Settings”.
Step 3: Choose “Account Settings”.
Step 4: Scroll down and choose “Text Messaging”.
Step 5: Select “Add another phone”
Step 6: Click "Change" to enter the postal code of your local region, then enter your mobile phone “Mobile phone number”, and click "Cotinue".
Step 7: Enter the code received into the bar “Confirmation Code” and choose “Confirm”.
Note: In case you do not get any code, you can click on “Send Code Again” to request another one.