You will still be able to receive iMessages and MMS (Multi Media Service) messages over a wifi network. Unlike SMS, these messages do not require cellular data and may be sent over wifi. If you also want to block iMessages and MMS messages, turn off wifi.

If you want to turn off wifi, click “Wi-Fi” instead.

If you like, go back to the wiki section of your settings and slide the toggle next to “Wi-Fi” to the left. The toggle will become grey and you will no longer receive iMessages or MMS messages.

To turn wifi back on, slide the toggle next to “Wi-Fi” to the right. The toggle will become green and you will once again be able to send and receive calls, texts, and FaceTime requests.

Alternatively, you can open the “Phone” app.

If you opened the “Phone” app, click “Contacts”. Find this icon at the bottom of the screen. Then, select the contact you would like to block.

Skip this step if you launched the “Phone” app.

Skip this step if you launched the “Phone” app.

If you delete the conversation from your Messages inbox, you will not be able to retrieve the erased messages once you unblock the contact.

Launch the “Settings” app. Click “Phone”, “Messages”, or “FaceTime”. You can manage your blocked contacts from all three places. Locate and click “Blocked”. Tap “Edit”. Find “Edit” in the very top, right corner of the page. Find the contact you want to unblock. Click on the red circle to the left of their name. Select “Unblock”. You will once again receive phone calls, text messages, and FaceTime requests from this contact. [1] X Research source

Click on the “Messages” app. Click on the conversation with the contact you would like to unblock. Click “Details”. Find “Details” in the very top, right corner of the screen. It is to the right of the contact’s name. Click on the information icon. Find this icon (a lowercase “i” in a circle”) to the right of the contact’s name. Scroll to the bottom of the page and press “Unblock this Caller”. This will unblock the contact.

This feature applies to group and one-on-one messages.

A crescent moon icon will appear next to the thread in your Messages app.

The contact’s name and information will still be available to you through your contacts list. [5] X Research source

Press “Enter number” and type the number in by hand. Click “+” next to the number to add it to your spam filter. The number will be added to the list below. Tap “Inbox”—you’ll be brought to your inbox. Select the thread with contact you wish to block—you’ll return to the previous screen and the number will automatically appear in the “Enter number” field. Click “+” next to the number to add it to your spam filter. The number will be added to the list below. Tap “Contacts”—you’ll be brought to your contacts list. Select the contact you wish to block—you’ll return to the previous screen and the number will automatically appear in the “Enter number” field. Click “+” next to the number to add it to your spam filter. The number will be added to the list below.

To disable “Blocking Mode”, slide this toggle to the left (off).

Use the “Allowed contacts” feature to select individuals or groups that can contact you when you are in this mode.