How to Know If Someone Blocked Your Number on iPhone

You've been trying to get in touch with a friend or family member, but they haven't returned your calls or messages. Are they just busy, is something wrong with their phone, or have they blocked your number? How can you tell if someone blocked your number? There's not a surefire way to know if your number is blocked, but there are a few telling signs that indicate someone blocked your number from texting or calling. Let's go over the clues that calls and messages from your iPhone are being blocked.

Related: How to Check Voicemails from Blocked Numbers on iPhone

iMessage Not Delivered: How to Know If Someone Blocked Your Number

If someone has blocked you on their device, you won't get an alert when it happens. You can still use iMessage to text your former contact, but they'll never receive the message or any notification of a text received in their Messages app. There is one clue that you've been blocked, though. Look underneath the last text you sent before you suspect you were blocked, does it say Delivered?

If the previous iMessage says Delivered but the most recent one doesn't, it can mean that you've been blocked. As you can see in the photo below, the two iMessages I sent my sister during our blocking experiment were never tagged with a delivery notification.

iPhone Message Not Delivered: Use SMS to Tell If Someone Blocked Your Number

If you want another indicator that your number has been blocked, enable SMS texts on your iPhone. This way when iMessages don't go through, your device will re-send the message using your data plan. As you can see in the picture below, my iPhone dutifully attempted to re-send my iMessages in SMS form, indicated by the green text bubbles.

If your SMS messages also don't receive a reply or a delivery confirmation, it's another sign that you've been blocked.

How to Tell If Your Number Is Blocked: Could It Be Do Not Disturb Mode?

If the person you texted hasn't blocked you and their iPhone is in Do Not Disturb mode, when their iPhone comes out of Do Not Disturb they'll receive both a notification and your iMessage.

To show this, my co-worker Sarah did not block my number on her iPhone for the first message in the picture below, then blocked me for the second message, "Hey Sarah - test text." For the second photo, Sarah set her iPhone to Do Not Disturb. You can see in the first photo below that for the first, unblocked text there is a delivery notification. The second, blocked text had no Delivered notification underneath. For the text during Do Not Disturb, a delivery notification popped right up, although the message wasn't delivered until Do Not Disturb mode was turned off. Therefore I must conclude that if someone has Do Not Disturb mode turned on, you'll still receive delivery notifications for your messages, but you will not if you've been blocked.

Going Straight to Voicemail: How to Know If Someone Blocked Your Number

So your text wasn't answered, and there's no delivery verification either. There is still the possibility that their phone is out of service for whatever reason. Unless there's an emergency, I'd wait to call your friend or family member. If your text still isn't answered after a few hours and you decide to call, here's how you can be pretty sure you've been blocked:

For this experiment I asked my sister to block my number, and here's what I discovered. The phone rang, but very briefly, not even a full ring before connecting to voicemail. I was able to leave a message as I would with any unblocked call, but it appeared in a separate section of the voicemail on her iPhone; in the blocked calls section. After she unblocked me, my sister was notified in the usual way about my voicemail, on her iPhone's Lock Screen. While I was blocked, however, there was no way at all for her to know I'd called, and no notification about the blocked voicemail. The only way she knew I rang was when she opened her voicemails and checked the Blocked Messages section. 

If your phone number isn't blocked and the person you're attempting to contact has their phone in Do Not Disturb mode, your voicemail will go to the regular, unblocked section. Also, if you call twice within three minutes and you're not blocked, the second call may go through due to the Repeated Calls feature. The Repeated Calls feature isn't a guarantee your second call will go through, though. As you can see in the picture below, there is an option to toggle Repeated Calls off.

Now that you have a few helpful clues to check for in your texts and calls, you'll be able to tell with reasonable assurance whether your number has been blocked or not. It's always best to speak to the person in question directly, though. Hopefully, there's been a misunderstanding, but if they did intend to block you and no longer want to be in contact, chalk it up to experience and move on. 

Top image credit: leungchopan / Shutterstock.com