After updating to iOS 26, a lot of iPhone users have complained that iMessages sometimes won’t deliver. It’s an annoying problem, but one which does have some solutions.

So why is iPhone iMessage not being delivered after iOS 26 update? Your blue messages, i.e. the ones sent from one iOS device to another, should say Delivered when they arrive on a recipient’s device, but that’s not always the case. This can affect multiple contacts or one person specifically. It’s more infuriating when the message says Delivered, but the recipient didn’t actually receive it.

So why are your iPhone messages not being delivered to one person? Or to numerous people? Here are a few tricks to try when your iPhone iMessage is not being delivered after iOS 26 update.

What Does “Delivered” Mean on iMessage?

We need to first understand the difference between Delivered and Read. Delivered means the recipient received the message on their device. Read means the recipient has open the message. Of course, this doesn’t mean they’ve actually read it—it only means the message has been opened. Don’t panic if you don’t hear back immediately; they might have tapped on it but subsequently got distracted.

Not everyone has this feature activated either. You can toggle read receipts on your iPhone by going to Settings > Apps > Messages > Send Read Receipts, where you can turn this function on or off. In fact, this subsection of Settings is essential if iMessage is not working properly on your iPhone.

Why Does iMessage Say “Delivered” When It’s Not?

Sometimes, a message will say it’s Delivered, but the recipient will insist they never got it. Don’t automatically think they’re lying: there are many reasons you may experience this issue. It could be a glitch with iMessage, but it could also be that the message was delivered to another Apple device.

If the recipient has an iPhone, iPad, and Mac all signed in with the same Apple account, your message could’ve appeared on one of these other devices, not their smartphone. In theory, this shouldn’t cause a problem—your message should show across all devices. However, iMessage is far from perfect.

Why is iMessage showing not delivered on iPhone?

The recipient might have simply powered 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.

Even if you think the person is unlikely to turn off their phone, they might have activated Airplane Mode. This cuts off all connections, so they won’t receive iMessages, SMS, or calls.

If you normally receive read receipts from your contact, or it shows Delivered, but you don’t have a reply, there’s another possibility. Their device might be set to Do Not Disturb, which silences alerts. If it’s an emergency, call them instead. At first, you won’t get a response. But call again within three minutes and, if your contact hasn’t changed the default settings, your repeated call will bypass Do Not Disturb mode.

iPhone iMessages Won’t Deliver After iOS 26 Update: Troubleshooting

It’s tough to narrow down why your iPhone iMessages won’t deliver after iOS 26 update without some trial and error. One of the following solutions should work. You may have to try them all to get to the bottom of the problem.

Do You Both Have Internet Access?

The obvious reason your iPhone message won’t deliver is because the recipient has no service. iMessage relies on an internet connection, so if no Wi-Fi or cellular data is available, it won’t appear until their phone is connected. This is a particular concern in rural or underground areas without free online access, or if the recipient is on vacation.

If iOS 26 says Not Delivered when you try to send an iMessage, you’re probably the one without an internet connection. Check this by going to Settings > Wi-Fi, where you can see any networks you’ve joined. You can turn Wi-Fi off and on again (then rejoin networks) to clear potential issues. Next, tap the red exclamation point, then tap Try Again.

Review the options at Settings > Cellular (or Mobile Data) if you’re relying on roaming. If you do have service, you’ll simply have to wait until the recipient connects too.

Do You Have iMessage Turned On?

This could be a quick fix to your problem so give it a try. Go to Settings > Apps > Messages. iMessage should already be turned on; if not, turn it on. Even if iMessage is already on, it’s worth toggling off then back on again. Wait a few moments while it reactivates.

See also: How to Fix iMessage Not Working on iPhone After iOS 26 Update

Send as SMS Instead of iMessage

If the person you’re contacting doesn’t have an iPhone, iPad or Mac, iMessage won’t work. You need to rely on SMS to text Android devices, for example. In these instances, your messages will say Sent as Text Message, not Delivered, and appear in green bubbles.

But texts aren’t just useful when sending between different operating systems. You can revert iMessages to SMS if your internet connection is weak. Go to Settings > Apps > Messages > Send as SMS to enable this. Next, tap the red exclamation point, then tap Send as Text Message. Messaging rates may apply.

iPhones default to iMessage when chatting between Apple devices. Messages will only send as traditional texts if there’s no internet. You can’t disable iMessage on cellular data while keeping it enabled for Wi-Fi connections—it’s an all-or-nothing service. However, iMessage may fail to send if you’ve exceeded your cellular data limit.

You can resend a message via SMS if it reads Not Delivered by tapping on the exclamation point next to the message. Alternatively, switch to another popular messaging app. Major options like WhatsApp and Telegram work on all platforms and offer secure (and sometimes encrypted) messaging. Of course, the recipient has to have the same app installed…

Try a Force Restart

A forced restart reboots your iPhone, stopping any problematic processes. This might fix your problem if your iPhone messages are not being delivered after iOS 26 update. To force restart your iPhone, quickly press and release the volume up button. Quickly press and release the volume down button. Press and hold the side button until the Apple logo appears on the screen. Release the side button.

Is iOS Up to Date?

Apple regularly releases patches to known bugs through iOS updates. This could include problems with iMessage. Check whether your iPhone is running the latest version of iOS 26 by going to Settings > General > Software Update.

This will automatically check if your software is updated and, if not, suggest an installation. You won’t lose any photos or messages, although some apps may ask you to log in again after updating.

Apple account: Sign Out and Back In

This is one of the most common fixes for iOS 26 iMessage issues: you just need to sign out of your Apple account and back in again. Go to Settings > Apps > Messages > Send & Receive and tap Apple Account. You should then Sign Out, after which all your details, except the phone number, will disappear. Select Use your Apple account for iMessage and sign back in. This may take a few moments.

iphone cell number and email address

You can send an iMessage via both phone numbers and email addresses. If there’s only one person you’re having trouble sending to, check which email address you have listed for them. Do you have any details listed for their contact? Perhaps their Apple account uses a different address? Ask them in person or via another messaging service if possible.

To add an email address, go to Contacts, select a name, and choose Edit.

Should You Delete Previous Messages?

Have you ever tried sending an email that was too large? It stays in your outbox, attempting to send again and again. Eventually, you have to give up and delete it. That’s what you should try here too. This primarily applies when iPhone iMessages won’t deliver to only one or two contacts.

You can delete a whole conversation and start again by swiping left on it and choosing Delete. That’s the nuclear option, and one you likely won’t want to take. But you shouldn’t need to. Be careful because this will make you lose your whole chat history with that person. It’s a last resort only.
Go to the conversation with the person you’re struggling to keep in touch with. Hold your most recent message (Copy it into Notes or Pages if you don’t want to completely lose your text, or screenshot if you want to remember dates, etc.). Go on More and select all the messages you’ve sent since the problem occurred—anything since they stopped responding—then hit the Trash symbol at the bottom.

There could be just one message causing the issue, so this clears the backlog and lets you try again.

Swap Your SIM Card

Does your iPhone have a physical SIM card? It’s possible yours has decided it doesn’t like a particular number. Head to the store of your service provider if you’ve exhausted everything else.

You’ll likely have to assure the staff that you’ve performed the above troubleshooting steps. Talk to them about swapping to a new SIM card. If you’re on a contract, they should do this for free. You’ll still use the same device, and shouldn’t lose any data.

They’ll activate a new SIM and you’ll have to wait until your old one has no service before swapping to the new card. Transferring between SIMs can take up to 24 hours. From personal experience, it rarely takes longer than an hour before carrier settings are restored.

Reset All Settings

This should really be your last resort because you’ll need to sign into accounts and set up network settings like Wi-Fi and VPNs again. Most importantly, this does not delete your data.

Go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings—careful you don’t select anything else, as there’s also the option to erase everything. You may need to sign back into your Apple account afterwards. This should patch any Settings-related glitches, so it’s worth remembering in case you have further issues with your iPhone.

iPhone iMessage Won’t Deliver on iOS 26: Is My Phone Number Blocked?

Don’t immediately think that someone’s blocked you. In most situations, your number won’t be blocked. However, it’s a possibility. If you have been blocked, iMessage could still say Delivered. Nonetheless, it won’t actually appear on the recipient’s device.

This thought will trouble you, but if you can contact that person elsewhere (on Facebook, Twitter, or Snapchat, for example), then they’re unlikely to have blocked your phone number.

Why Is My iPhone iMessage Still Not Delivering on iOS 26?

If you’ve tried everything above and iOS 26 iMessage still won’t deliver, there are further possibilities to entertain. The first is that there’s nothing wrong with your iPhone; the problem is with the recipient’s device. This is likely if messages to your other contacts are delivered correctly, although that’s not always the case.

You should advise your contacts to take the same steps you already have by sending them this troubleshooting guide. Another possibility is that they’ve switched numbers and haven’t alerted you yet.

After updating to iOS 26, you might run into an issue where iMessage activation is unsuccessful. While this issue is rare, it does happen, and Apple is aware of it.

You might see a message saying something like “iMessage activation unsuccessful.” You might also get a message that says “waiting for activation.” Unfortunately, you can’t use iMessage or FaceTime if either of these pop-up.

If you’re experiencing this issue, you might be frustrated as you probably want to use iMessage on your iPhone immediately. Fortunately, there are some things you can do.

1. Make sure that you’re connected to the internet

To activate iMessage, you’ll need to have a working internet connection of some kind. This is one of the most common issues, but remember that iMessage and FaceTime rely on Wi-Fi or cellular data to connect to the internet.

So, check your cellular or Wi-Fi connection to see if you can access the web. One way to check this would be to go to Safari and navigate to any webpage. If you don’t have an internet connection or the web page won’t load, this is a sign that you should connect to the internet. Check out our articles on how to troubleshoot Wi-Fi connectivity problems and cellular data problems in iOS 26. If you have a working internet connection but iMessage still won’t activate, move on to the next’s solution.

Note: You need SMS messaging to activate your phone number with iMessage and FaceTime. Depending on your carrier, you might be charged for this SMS. If a prompt appears stating “Your network provider may charge for SMS messages used to activate FaceTime and iMessage”, tap “Turn On” to allow possible SMS charges.

2. Set Your Apple Account Email Address to Send and Receive iMessages

If you keep getting activation is unsuccessful error on your iPhone, be sure to check your Send & Receive settings. If this isn’t properly enabled, your iMessage activation won’t be successful. This can also prevent you from getting texts and picture messages.

To enable this, head to Settings > Apps > Messages > Send & Receive and make sure both your phone number and email are selected. This is one of the most common solutions to this problem. However, if this doesn’t resolve your issue, you have many more options.

3. Restart iMessage and FaceTime

If you’re having iMessage activation issues on your iPhone, consider restarting both iMessage and FaceTime.

To restart iMessage and FaceTime, go to Settings > Apps > Message and turn off iMessage. Then, go to Settings > Apps > FaceTime and turn off FaceTime. Restart your iPhone. Then, go back into your Settings app to turn both iMessage and FaceTime back on.

Once both are back on, you might need to wait a little while before checking again to see if your activation is successful.

4. Check Your Time Zone Settings

Some users claim that if time zone settings are wrong, you’ll run into iOS 26 iMessage activation issues. While this issue isn’t widely reported, some users online claim that fixing their time zone helps.

To do this, head to Settings > General > Date & Time > Time Zoneand update your time zone to the one you’re currently in. You’ll need to toggle off Set Automatically to be able to do this.

If you’re on the border of two time zones, try switching to the other time zone. If you’re using a new carrier, your carrier might have a tower in the nearby time zone and not the one you’re in, causing activation issues.

5. Check Apple’s Server Status

If you’ve tried all the above fixes and still can’t activate iMessage on iOS 26, be sure to visit Apple’s System Status page and see if iMessage service is up and running.

While rare, there is a possibility that Apple’s servers might be down. If a server is down, particularly the iMessage server, then your iMessage won’t activate on your iPhone until Apple fixes this issue.

If you see that the iMessage server is down, you have no choice but to wait until Apple fixes its backend.

6. Reset Network Settings

Resetting your network settings will reset all of your settings related to your cellular network and Wi-Fi connections. This will resolve many issues related to your network connection, which could be preventing iMessage from being successfully activated on your iPhone.

Resetting your network settings is faster than a factory reset, and it targets all the settings you’d need to restore to factory defaults without reinstalling all of your apps or erasing all your data.

To reset your network settings, head to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. Once you do this, check again to see if iMessage can be successfully activated.

iMessage Won’t Activate After iOS 26 Update? Wait 24 Hours

iMessage can take up to 24 hours to activate on an iPhone. While many iPhone owners activate it right away, a poor internet connection or issues with your carrier can delay this process. However, it should never take more than 24 hours.

If you’ve waited more than 24 hours and iMessage still won’t activate on your iPhone, Apple recommends contacting its support team. When contacting Apple Support, tell them you restarted iMessage and FaceTime and that you’re connected to the internet. Apple will ask you to do these things first, so letting them know you did this can speed up the process.

Once you reach out to Apple after trying the above fixes, Apple will check for any issues you might not notice from your end.

Unsuccessful iMessage Activation? There’s a Fix

If your iMessage activation is unsuccessful after iOS 26 update, there is a fix. Apple wants you to be able to use iMessage, and this not working poses a problem for the company. This is why most issues with iMessage are fixable, and Apple is aware of the known issues.

iMessage still won’t activate after trying all these fixes? You have no choice but to wait for the next iOS 26 update.

• iMessages are texts, photos, and videos sent between Apple devices using Wi-Fi or cellular data.
• When iMessages are working properly, texts appear in a blue bubble.
• You can troubleshoot iOS 26 iMessage issues by toggling your Wi-Fi, cellular, and iMessage on and off.

In iOS 26, Apple added several long-desired features to iMessage that make for a better experience such as customized backgrounds, an option to create polls, enhanced spam filtering and blocking features, and group typing indicators.

When you send a text using iMessage, it appears in a blue bubble. If you’ve been trying to send iMessages after iOS 26 update and all of your messages are suddenly appearing in green bubbles, then iMessage isn’t working correctly on your iPhone. In this article, I’ll explain how to fix iMessage if it’s not working after iOS 26 update.

What to do if iMessage is not working after iOS 26 update on your iPhone

If iMessage isn’t working on your iPhone, you’re losing out on a couple of key advantages that iMessage has over ordinary SMS text messaging.

iMessages are sent and received as ordinary internet data, so they don’t count against your cellular text plan. They’re also encrypted from end to end, synchronize across all your Apple devices, and let you see when the other person is typing.

All of these features only work with other iPhone users. But if all your text are being sent as Text or RCS, and for those group chats that are only iMessage, it’s not going through at all, it’s time to troubleshoot.

Make sure that you’re connected to the internet

Unlike SMS texting, iMessage require a internet connection, whether it’s from Wi-Fi or cellular data. So if your iMessage is not working on iOS 26, you could have an issue with your internet connection that leads to your iPhone falling back to SMS as afailsafe.

To check if your iPhone is connected to the internet, open up Safari app and try navigating to any website. If the website doesn’t load or Safari says you’re not connected to the internet, your iMessages won’t send either. If you are having problems with the internet connection, here’s what you can do:

1. Start the Settings app and tap Wi-Fi.
2. Turn Wi-Fi off by swiping the button to the left, wait a moment, and turn it back on with a swipe to the right. Learn what to do if Wi-Fi is not working after iOS 26 update.
3. Go back to the main Settings page, then tap Cellular.
4. Turn your cellular data off by swiping the button to the left, wait a moment, and turn it back on with a swipe to the right. Learn what to do if cellular data is not working after iOS 26 update.
5. Make sure you see both Wi-Fi and cellular symbols at the top of your iPhone screen.

Make sure iMessage is turned on

If iMessage is not working after iOS 26 update, try making sure your iMessage service is turned on. Open the Settings app, then select Apps. Scroll down and tap Messages. On this page, make sure that iMessage is enabled.

Make sure iMessage is set up with your phone number and Apple account email address

iMessage works not just with your phone number but with your Apple account email address as well as any email addresses that you have associated with your Apple account. This way, you can send and receive iMessages across your Apple devices. If iMessage is not working on your iPhone running iOS 26, try making sure it’s set up with your current number and Apple account email address.

To do so, go to Settings, then Apps, then Messages. Tap to open the menu item called ‘Send & Receive’. Look under the section titled ‘Start New Conversations From’, and you’ll see a list of the phone numbers and email addresses that are configured to send and receive iMessages on your iPhone. Make sure there is a checkmark next to your phone number and email address you want to use with iMessage. If there’s no checkmark, tap on your phone number and email address to activate iMessage for your number and email address.

If your preferred email address or number isn’t listed, you’ll have to add them to your Apple account first. Here are the steps to do so: From Settings, select your Apple account name at the top, then select Sign-In & Security. Then you can select Add Email or Phone Number and follow the steps to add them to your Apple account.

Check if iMessage is down

We know iMessage stopped working after iOS 26 update. However, there’s a chance that iMessage is down on Apple’s end. Apple has a website that tracks all of its servers and notes if any go offline. Check that the iMessage tab has a green dot next to it — if the dot is yellow or red instead, the iMessage server is having issues.

If that’s the case, just wait for Apple to repair the server.

Figure out whether the problem is on your end or someone else’s

Keep in mind that an iMessage failure can be caused by a problem with your iPhone — or with the person you’re exchanging messages with.

Is iMessage failing with only one iPhone user or with every iPhone user you text with? If necessary, send a short text message to several people and see whether the problem is limited to one person or to everyone.

If iMessage is failing with only one person, perhaps the person you’re trying to reach has their iMessage turned off. In which case, you can try instructing them how to make sure their iMessage is enabled.

Make sure iOS is up to date

Whether it’s iMessages or your phone is acting up in some other way, it’s a good idea to ensure your iPhone is running the most up-to-date version of iOS 26.

To update your iPhone:

1. Open the Settings app.
2. Tap General.
3. Tap Software Update.
4. If your iPhone has an update waiting, the page will tell you what it is and what it includes. Tap Update Now and follow the online instructions.

Your iPhone will restart automatically to install the update. Once it turns back on, check if iMessage is working.

Turn iMessage Off, Reboot, And Then Back On

If you are still having your iOS 26 iMessage issue, toggling the entire iMessage service off and back on again might solve the problem.

1. Go to the Settings app, select Apps, tap Messages, and toggle off the iMessage button.
2. Restart your iPhone by turning it off then back on.
3. Go back to the Settings app, select Apps, tap Messages, and turn iMessage back on by swiping the button to the right.

Reset your network settings

Issues with network connectivity can also cause problems with iMessage, and often times restoring your iPhone’s network settings back to factory defaults can resolve an issue with iMessage. Beware this will erase your saved Wi-Fi networks and passwords, so you’ll need to enter them again.

1. Go to Settings, select General, then tap Transfer or Reset iPhone.
2. Tap Reset.
3. In the pop-up window, tap Reset Network Settings and confirm you want to do this.

Contact Apple Support

When all else fails, it’s time to check in with the geniuses. Check out our help article for more information on how to contact Apple Support.

Conclusion

I hope this article has helped you to resolve the issue you’ve been having with iMessage on iOS 26. I look forward to hearing from you about your experiences with iMessage in the comments section below.