Fix iMessage Not Delivered Error on iPhone or iPad iOS 11/10

The iMessage service is a great boon for Apple users since it provides an easy and secure method to send a variety of messages in the forms of emojis, media files, and textual effects. With the new iOS 11 update, some users face issues where their messages aren’t delivered or there are errors when using the iPhone or iPad. Follow our guide below to fix the iMessage not delivered issue easily on your iPhone or iPad.

Before we begin looking for a solution – activate iMessage from iOS Settings.

7 Ways for Fix iMessage not delivered on iPhone or iPad running iOS 11 or Below

1. The Red Exclamation Mark

This warning symbol shows the user that their message was unsent due to a wide variety of reasons which can range from internet connectivity issues to cellular data problems. In such a case try resending your message.

Check iMessage server status

Such a problem can also occur due to server problems which are beyond your device’s control. To check if this is the problem take a look at Apple’s iMessage server status.

2. Restart iMessage

Depending on your carrier iMessage will activate after 3 to 4 days, so it is important to send a request.
Step 1: Go to Settings.
Step 2: Go to Messages -> iMessage and enable Toggle. After a few seconds to a minute, a ‘Waiting for Activation‘ message should appear. After successful activation, the message will disappear on its own.

3. Reset Network and try again

First, try to enable and then disable airplane mode to re connect to your cell network provider. Alternatively, you can reset networks settings on your iDevice:
Step 1: Go to Settings.
Step 2: Tap General and then select Reset.
Step 3: Tap on Reset Network Settings.

Reset Network settings on iPhone to resolve connection issues

After that, you will need to reconnect to your WiFi network and reactivate iMessage again.

4. Restart or Reboot

Disable iMessage then activate iDevice and Restart device.

Reboot iPhone to resolve iMessage issues

Note: To force Restart press Sleep/Wake and Home Button for iPhone 6 & earlier. Press Volume down button for iPhone 7 and later.

5. Check WiFi and Cellular Network

If the internet is not working correctly it is possible to use iMessage Alternatives. We can use an option from settings to send our message as an SMS.
Go to Settings -> Messages -> Send as SMS.

6. Sign out of iMessage Apple ID

Doing this is very simple, just log out iMessage before performing a Reboot and then turn iMessage on without any Apple ID.
To do that, go to Settings -> Messages -> Send & Receive -> Tap on Apple ID -> Sign out.

Sign out and Sign in again to resolve iMessage issues

After few moments, try to activate iMessage again and sign in to your Apple ID.

7. Resend iMessage

It is also possible that your carrier may not be able to provide the iMessage service at that point in time. The best way to find out is to contact your carrier service provider.
However, to resend iMessage simply tap on the Red Exclamation Mark and hit ‘Try Again.’

Resend messages that are not delivered on iPhone

In addition, you can tap ‘Send as Text Message’ causing the message to send through carrier along with charges.