To block a contact on an iPhone, you can follow these straightforward steps:

1. Using the Phone app:
   • Open the Phone app.
   • Go to the Contacts tab or Recents if you want to block a recent caller.
   • Find and tap the contact or the info icon (ⓘ) next to the number.
   • Scroll down and tap Block this Caller.
   • Confirm by tapping Block Contact.
2. Using the Messages app:
   • Open the Messages app.
   • Select a conversation with the contact you want to block.
   • Tap the contact's name or number at the top.
   • Tap the info button.
   • Scroll down and tap Block this Caller , then confirm by tapping Block Contact.
3. Using the FaceTime app:
   • Open the FaceTime app.
   • Tap the info icon (ⓘ) next to the contact or number.
   • Scroll down and tap Block this Caller , then confirm.
4. Using Settings:
   • Open Settings.
   • Scroll down and tap Phone , Messages , or FaceTime.
   • Tap Blocked Contacts.
   • Tap Add New and select the contact you want to block.

Blocking a contact stops them from calling, messaging, emailing, and FaceTiming you. They will not be notified that they have been blocked, and you will no longer receive any communication from them. However, you can still call or message them if you choose to unblock later

. If you want to unblock a contact, you can return to the Blocked Contacts list in Settings and remove them from the list. This process works on various iPhone models and iOS versions, including iOS 17 and earlier