What does phone number in red color in contacts indicate on iPhone?
On one of my contacts I have their phone number is red. What does that indicate?
[Re-Titled by Moderator]
What is your default Contacts account? If none, please add an email account and enable contacts.
See the pic below
Unlike some Android devices, contacts are neither stored locally on an iPhone nor in SIM. They are synced to an email account that you had Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other
If you have a corporate email account added through a profile on your device, please check with your organization's system administrator.