If you are unable to send messages to a particular person from your iPhone, it is possible that this person may have accidentally or intentionally blocked you on iMessage.
This is possible, because iPhone does not provide a notification or an alert message, whenever any of your contacts ends up blocking your phone number.
Hence, if you are unable to send messages to a particular contact, while you are able to send messages to other contacts, it is likely that this particular contact has blocked your phone number.
How to Find if Someone Has Blocked You on iMessage?
Since, iPhone does not provide a notification when anyone blocks you in iMessage, you will have to use a combination of methods as provided below to check and confirm if your phone number has been blocked by this contact.
1. Check Read Receipt Status
Make sure read receipts are enabled on your iPhone and send a message to the person that you believe has blocked you.
1. Send a Message to the person that you believe has blocked you.
2. After the message is sent, take a look at the status of Read Receipt. If you see the word “Delivered” on read receipt, it confirms that you have not been blocked by this contact.
If you do not see ‘Delivered’ or do not see any delivery status, it indicates the possibility of your phone number being accidentally or intentionally blocked by this contact on iMessage.
However, this can also happen if this contact has Disabled Read Receipts and also if the contact’s phone is not connected to internet.
2. Call the Person that you believe has blocked you on iMessage
The next way to find or know if someone has blocked you on iMessage is to make a phone call to the person that you believe has blocked you on iMessage and observe what happens during the Call.
If you can hear the call ringing normally (multiple times) before going to voicemail, your contact is most likely busy and has not blocked you on iMessage.
If the phone rings briefly (once or 2-3 times) and gets abruptly diverted to voicemail, it is most likely that this person has blocked you on iMessage.
However, you need to be aware that similar signs can be noticed, if the phone is switched off, disconnected from network and also if the person is on another call or has set calls to be Auto-diverted to voicemail.
Hence, try calling this person a few more times at different times of the day and observe if the calls are always being diverted to voice mail.
If the calls are always being diverted to voice mail, it is a strong indication of your phone number being blocked on iMessage.
3. Hide Caller ID and Make a Call
Another possibility is that the person that you are trying to call might be ignoring your messages and calls. You can confirm this by switching OFF your Caller ID and making a call to this person.
Go to Settings > Phone > Show My Caller ID > move the toggle next to Show My Caller ID to OFF position.
After hiding Caller ID, call the person that you believe has blocked you and carefully observe what happens during the call.
- The phone will ring as normal and won’t immediately transfer to voice mail after short ring.
- The person may answer the call or cut you off as he/she is unable to see who is calling.
If the phone rings as normal, it confirms that this person has indeed blocked your phone number in iMessage.
Similarly, if the person tries to answers the call or disconnects the call after a few rings, it confirms that you have been blocked on iMessage.
If the phone rings once and gets diverted to voice mail (even with caller ID hidden), it is possible that there is something wrong with the phone or phone number of your contact.
4. Bypass Do Not Disturb Mode
Another possibility is that the person that you are trying to contact on iMessage has placed his/her iPhone in Do Not Disturb Mode and forgotten to disable do not disturb mode.
If this appears to be the case, you might be interested in this guide: How to Call Someone Who is Using Do Not Disturb Mode on iPhone.