When someone switches to a new device that doesn't run on iOS, they may leave their phone number in the app. In that case, you may not get the “Delivered” tag if you message them, but the message bubbles will be blue.
When an iMessage user blocks another user or stops receiving their messages altogether instead of seeing these messages in blue bubbles (as they should), they'll see them listed as “not delivered” instead of being able to read them outright on their phone screen like normal conversations would appear under normal ...
When it doesn't say Delivered, it means the other person is texting someone else or on the phone. Once they stop texting or hang up the phone, you will see the text message has been delivered.
Actually, iMessage not saying “Delivered” simply means the messages have not yet been successfully delivered to the recipient's device due to some reasons. Reasons could be: WiFi not working on iPhone/iPad or the iDevice don't have cellular data networks, they have their iPhone off or on Do Not Disturb mode, etc.
“The last message that you know was received and responded to…should have a 'delivered' status,” Lavelle explains. If, under the messages you've sent after that, you don't see that “delivered” notification, that could mean that person has blocked you.
If you send a message as a regular SMS in the green text bubble and you do not get a “Delivered” notification but instead get a notification similar to “Message not Delivered” or no message at all, that means you were probably blocked.
Your old messages remain blue, but the latest texts you send after they've blocked you turn green. However, the bubble colors aren't accurate clues. They could mean the recipient turned off their phone, gone offline, or switched from iOS to Android.
If you see a green message bubble instead of a blue one, then that message was sent using MMS/SMS instead of iMessage. There are several reasons for this: The person that you sent the message to doesn't have an Apple device. iMessage is turned off on your device or on your recipient's device.
Either the customer gave you the wrong number or you entered it incorrectly into the database. It's also possible that the mobile number has been discontinued, so the number used to be correct but is no longer active on the network. A common error is to attempt to send an SMS to a landline.
One way to test this situation is to leave a voicemail and wait. If you've been blocked, the recipient will not receive a notification and won't be able to respond. If you don't receive a returned call or text message within a few days, there's a good chance you may be blocked.
If an iMessage doesn't say Delivered, the recipient might have simply turned their phone off. Your message will arrive when they turn on their device again. Be patient. Not everyone keeps their phone turned on all the time, especially during the nighttime.
So if you send a message to someone who has blocked you, then everything will look normal with you. You will also see Delivered Status if you send messages via iMessages - but the message does not reach the recipient. The recipient will also not be able to see that you have tried to send a message to them.
If you're blocked, you won't see "Delivered" below the most recent text bubble. However, with recent security updates, this tip depends on your iPhone software version. If you've updated to iOS 16.5 or later, you'll still see the "Delivered" notification beneath the last text you sent, even if you're blocked.
What are Blue Texts? Blue texts are texts, photos, or videos that you send over iMessage. These texts are sent and received over Wi-Fi or cellular data. Due to that, they won't count against your text messaging plan if you have one for your phone.
The green message background indicates the traditional SMS text message. It actually means a message that you have sent to someone else is through SMS message service instead of Apple iMessage. Blue message background means the message is sent via iMessage technology.
A green text message on your iPhone isn't a sign that your phone number was blocked, or that the text was not delivered. Instead, it means that the message was sent as a standard SMS message rather than an iMessage, which will appear as blue.
iMessages are texts, photos, or videos that you send to another iPhone, iPad, iPod touch, or Mac over Wi-Fi or cellular-data networks. These messages are always encrypted and appear in blue text bubbles.
Short answer: Blue ones have been sent or received using Apple's iMessage technology, while green ones are "traditional" text messages exchanged via Short Messaging Service, or SMS.
If your iPhone messages are green, it means they're being sent as SMS texts rather than iMessages. You'll always see green when texting Android users, or when you're not connected to the internet. If all of your iPhone messages are green, you should make sure iMessage is turned on in Settings.
Send them an SMS message
When you send them an SMS and you get the "Delivered" notification underneath it, you weren't blocked. If you get a notification like "Message Not Delivered" or you get no notification at all, that's a sign of a potential block.
Having your calls go straight to voicemail, not getting a delivery notification for your text messages, and not getting any responses can indicate that a person has blocked you.
If you have an iPhone and try to send an iMessage to someone who has blocked you, it will remain blue (which means it's still an iMessage). However, the person you've been blocked by will never receive that message.
When someone that you've blocked texts you, their texts go nowhere. They won't receive any notification that they're blocked, and their messages will still look like they've been sent. But you won't receive any of them, and you can't respond.