Open the text message from the number or contact you wish you block.
- Tap the number or contact at the top of the message, then click the small info button. ...
- On the Details screen, tap the right facing arrow next to the name, phone number, or address which texted you. ...
- Tap "Block this Caller."
Can you block someone from iMessage?
You can block phone numbers, contacts, and emails on your device. You can also filter iMessages from unknown senders and report iMessages that look like spam or junk.
Why can't I block someone on iMessage?
iMessages are sent over your 3G or Wi-Fi data connection, so carriers can't block them. The only way to totally cut ties with someone who's using iMessage is to block his phone number through your carrier and turn off iMessage in your Settings app.