Summary
If you are using multiple Apple IDs on your iPhone, it’s easy to make the mistake of using different IDs for iCloud and iMessage, resulting in the message “iCloud and iMessage accounts do not match” and limited iMessage functionality.
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To fix this issue, users should open the Settings app, verify their email ID, and then verify the iMessage settings.
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Once this is done, users should be able to send messages using iMessage.
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According to