Hi Zainiphone,
It sounds like you're looking for information about managing your contacts. If so, check out the helpful information below from the article here: Manage and delete contacts on your iPhone or iPad - Apple Support
"Set up your contacts account
You can set up your email accounts to share contacts with the Contacts app. If you have a contacts account, like a business or school directory, you can set that up, too.
- Go to Settings > Contacts > Accounts.
- Tap Add Account.
- Tap the service that you have an account with. Or tap Other to set up a contacts account, like an LDAP or CardDAV account.
- Enter your information and password.
- Tap Next.
If you have multiple accounts set up in the Contacts app and want to see contacts for a specific one, open Contacts and tap Lists in the upper-left corner."
You can also enable or disable the Siri contact feature with the steps below found here: Add and use contact information on iPhone - Apple Support
"Create a contact
Tap +. Siri also suggests new contacts based on your use of other apps, such as email you receive in Mail and invitations you receive in Calendar. (To turn this feature off, go to Settings > Contacts > Siri & Search, then turn off Show Siri Suggestions for Contacts.)
Based on how you use Contacts, Siri also provides contact information suggestions in other apps. (To turn this feature off, go to Settings > Contacts > Siri & Search, then turn off Learn from this App.) See Siri Suggestions on iPhone."
If there's a different issue or you need help with something else, can you tell us a bit more about what it is you're looking to use with the feature or if for example you're trying to add a new contact from a Siri suggestion.
Cheers.
