It's easy to enable iMessage on an iPhone to send messages over cellular data or Wi-Fi with other iPhones, or over Wi-Fi with iPads or Mac computers.

iPhone users on iOS 26, iMessage activation may be blocked by an inactive SIM — here's how to fix it. Some users are finding ...

You can enable MMS on your iPhone to send multimedia messages without using iMessage. Here's how to make sure it's enabled.

Apple says the issue may stem from having an inactive SIM with the same number as your active SIM. To fix it, remove the ...

Here's how to fix iOS 26 iMessage activation bug on phone number, with the fix coming straight from Apple in official ...

Though we don't know the scope of the users affected, we do know who might be affected. According to Apple, the issue might occur when updating to iOS 26 if you have an inactive SIM with the same ...