The "123" is a placeholder for the first part of your phone number. Since the country code is already set to +27 for South Africa, you should enter the remaining digits of your phone number, starting

The "123" is a placeholder for the first part of your phone number. Since the country code is already set to +27 for South Africa, you should enter the remaining digits of your phone number, starting after the initial "0". For example, if your full South African phone number is 079 123 4567, you would enter "79" in the "123" field and "1234567" in the "1234567890" field. 3 done, 2 left today. You're making progress.