She went to and toggled Send as SMS to ON (green).
In short: The message was blocked before it could even try to reach the other person.
And if all else fails? Restart your iPhone. Sometimes the story ends with a simple reboot. how to turn off message blocking is active on iphone
Here’s the technical story: iPhones try to send via iMessage (blue) first. If that fails (no internet, recipient not on Apple), they fall back to SMS (green). But if is disabled, the iPhone won’t fall back. Instead, it shows “Message Blocking is Active” because the SMS pathway is blocked.
But the error persisted with her mom and brother. So she moved on. Next, she checked Focus modes . She often used “Driving” or “Work” Focus to silence notifications. Could they also block outgoing texts? No—Focus modes only silence incoming alerts. But one setting tripped her up: In Settings > Focus > [Any Focus] > Focus Status , turning this off prevents others from seeing that you have notifications silenced. That doesn’t block outgoing texts. So that wasn’t it. Chapter 4: The Real Culprit – SMS vs. iMessage Sarah realized the error only appeared when she tried texting non-Apple devices (her mom’s Android, her brother’s work phone). iMessages (blue bubbles) to other iPhones were working fine. She went to and toggled Send as SMS to ON (green)
It was a quiet Tuesday evening when Sarah tried to text her friend Mike about dinner plans. She typed “Hey, are we still on for 7?” and hit send. Beneath her message, a dreaded gray bubble appeared. It didn’t say “Delivered” or “Read.” Instead, it read: “Message Blocking is Active.”
Panic set in. Had Mike blocked her? Was there a problem with her phone? She quickly tried texting her mom—same error. Her brother—same error. The problem wasn’t with Mike; it was with her iPhone. Sarah took a breath and started researching. She learned that this error doesn’t mean she is blocked. It means her iPhone is unable to send a text message to the recipient because of a restriction somewhere between her phone and the cellular network. Restart your iPhone
Then she tested: Text to Mom’s Android. Sent. No error. Success? Not quite. The error reappeared when she tried texting a shortcode (like a 5‑digit restaurant reservation number). That led her to the final layer: carrier-level blocks . Many carriers allow you to block “Premium SMS” or “Shortcode messages” to prevent accidental charges. Some even block all standard SMS if your account has a restriction (e.g., international roaming turned off, parental controls, or an unpaid balance).