Why is my phone saying message blocking is active?

Your SIM card might be causing the issue. If it has been installed incorrectly or damaged, it might disrupt messaging services. Here’s what you can do:
1. Turn off your phone.
2. Remove the SIM card.
3. Clean it gently and reinsert it.
4. Turn on your phone to see if messaging resumes. If not, you might need a replacement SIM.

In rare cases, your phone number could be flagged for spam by your carrier’s network, especially if it has been reported for sending unsolicited messages. Reaching out to customer support of your carrier may help in resolving this restriction.

You might have blocked the person you’re trying to message by accident. When you block a contact, messages to that contact won’t be sent even if message blocking isn’t fully active. To unblock:
1. Open Contacts or Messaging app.
2. Find the contact in question.
3. Ensure the contact isn’t on your block list within their settings.

Your carrier might have restrictions on your messaging service, especially if there is an unpaid balance on your account. Contacting your carrier to verify account status could clarify this issue.

Sometimes, the phone’s messaging settings can change inadvertently, maybe due to a software update or some customization error. To check and fix this, you should:
1. Open your Messages app.
2. Head to Settings.
3. Ensure the block messages option is turned off.
After a recent update, certain default settings might block messages, and you would need to disable those manually.