Some texts say "delivered" while others don't because of factors like the recipient's phone being off/out of service, network issues, carrier filtering, or settings (like read receipts being off), with "delivered" meaning the message reached the device, but "read" (or lack thereof) depends on the app and user settings. It's often about network connectivity or device status at the moment of sending.
Why do Android messages not get delivered? It could be network issues, outdated apps, or problems with the carrier. If you're not receiving some text messages on Android, double-check your settings.
Your text messages don't deliver
If your text messages aren't going through, it could mean the intended recipient has blocked your number. Most devices and messaging platforms indicate undelivered messages with a “Not Delivered” status message or a symbol, like a red exclamation point.
Text messages may not be delivered for several reasons: Carrier filtering – Wireless carriers use automated filters to block messages they think could be spam, scams, or non-compliant marketing. Invalid numbers – If the phone number is disconnected, typed incorrectly, or a landline, the message cannot be delivered.
You know someone turned off read receipts when you don't see the "Read" confirmation (like blue ticks on WhatsApp or "Read" with a timestamp on iMessage) after you've sent a message and they've had time to view it, and you only see "Delivered" or nothing at all, as disabling the feature prevents both parties from seeing read statuses, with no direct notification sent to you. It means you won't know if they've opened it, but you can sometimes infer by their app's "last seen" status if that's enabled.
They'll still receive the messages, but they'll check them on their own time. In Messages, you'll see a small moon icon or a message saying "notifications silenced" next to their name, indicating their current status.
When texts to one contact fail, verify the recipient's number is correct and not blocked. Check your messaging app's settings and clear its cache. Network issues or the recipient's phone settings (like call forwarding or blocking) can cause delivery failures. Try sending messages via Wi-Fi or another messaging app.
When you text someone who blocked you, the message generally sends from your end but is blocked from reaching the recipient; you typically won't get an error message, but you won't see a "Delivered" notification (on iPhones, it might stay blue but lack delivery confirmation, while on Android, it might show "Not Delivered" or just hang, but you can't know for sure without them telling you or trying other methods like calls to voicemail or different apps).
To know if someone blocked you, watch for calls going straight to voicemail after one ring, texts showing "Not Delivered" (or no read receipts/checkmarks on apps like WhatsApp), and potential changes on social media; the most definitive test is calling from another number, where it rings normally for you but goes to voicemail on your original number, indicating a block.
Not Delivered message, it won't send unless you manually resend it.
If you're blocked it will never say delivered. It will pend blue a minute then switch to green bubble with 'Sent as Text Message' below your message. It wasn't received cuz you're blocked but that is what your phone will do.
When read receipts are turned on, the sender sees the word “Read” below messages they've sent to you, indicating that you've read their message. If you haven't read their message, the sender sees “Delivered.” You can turn on read receipts for everyone or for individual contacts.
One of the most common reasons for non-delivery is simply that the mobile number (also known as an MSISDN) is incorrect. Either the customer gave you the wrong number or you entered it incorrectly into the database.
Check the Bubble Color
For example, if you send me a message and I receive it with a green bubble, this means that the message was sent through SMS rather than iMessage. If you don't see a blue bubble on your end, then it's likely that they've blocked you on iMessage.
What You Can See: Delivery Receipts. Although read receipts aren't available, delivery receipts are. When you send a message using a service like Texty Pro, you will see a double check mark next to the timestamp of your message once it has been successfully handed off to the recipient's mobile carrier.
If a person has blocked you, you will not be able to see their message read confirmation (double blue check mark). You will still be able to see message sent confirmations (single gray check mark).
Nah, if their iPhone was actually off when you sent the text, it wouldn't say “Delivered.” iMessage only shows “Delivered” when the message successfully reaches their device. That means their phone was on long enough to receive it, or at least connected to some network.
You'll still receive messages, but your device won't vibrate or make noise to notify you.
If both you and your contact are using iPhones, then you're in luck — iMessage lets you know if someone is on DND with ease! For example, you'll see a message like "[your contact] has notifications silenced" at the bottom of the chat, as long as the contact has enabled the Do Not Disturb mode on their iPhone.