My iPhone is Losing Contacts

[The Mad Monk]

My iPhone seems to be losing contacts. a text came in yesterday and I was struggling to work out who it came from.

It's an iPhone 6S, bang up to date with er, updates.

Any suggestions, please?

[megaphone]

Do you have any other devices associated with your iCloud account? Are they updating contacts maybe? Do you have the same contact number entered twice?