Start United States USA — IT Apple Explains How to Fix iMessage Not Delivered Alert in iOS 26

Apple Explains How to Fix iMessage Not Delivered Alert in iOS 26

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October 15, 2025

Apple today updated its iMessage troubleshooting support document to add a scenario that can occur in iOS 26. If you don’t activate iMessage or.
Apple today updated its iMessage troubleshooting support document to add a scenario that can occur in iOS 26. If you don’t activate iMessage or an eSIM when setting up a new iPhone with ‌iOS 26‌, it can prevent iMessage from working.