Edit contacts on iPhone
In the Contacts app , assign a photo to a contact, change a label, add a birthday, and more.
Tap a contact, then tap Edit.
Do any of the following:
Assign a photo to a contact: Tap “add photo.” You can take a photo or add one from the Photos app.
Change a label: Tap the label, then select one in the list, or tap Add Custom Label to create one of your own.
Add a birthday, social profile, related name, and more: Tap next to the item.
Allow calls or texts from a contact to override Do Not Disturb: Tap Ringtone or Text Tone, then turn on Emergency Bypass.
Add notes: Tap the Notes field.
Add a prefix, phonetic name, pronunciation, and more: Tap “add field,” then select an item in the list.
Delete contact information: Tap next to a field.
When you’re finished, tap Done.
On models with Dual SIM, when you call or text a contact, iPhone uses the same line you used for your previous communication with this contact by default. To choose a preferred line for phone calls and SMS/MMS message conversations, select the contact, tap default (below the contact’s name), then choose a line.
To change how your contacts are sorted and displayed, go to Settings > Contacts.