If you see the specific error message "Free Msg: Receiver unable to receive message - Message Blocking is active," the issue is likely with your service provider (T-Mobile, AT&T, Verizon, etc.) rather than your iPhone settings.
As a last resort, you can try resetting your iPhone to its default settings. This will erase all of your data, so make sure to back up your iPhone before doing so: how to remove message blocking on iphone
Note: This will delete saved Wi-Fi passwords, so have them handy. 5. Toggle iMessage and Send as SMS If you see the specific error message "Free
Try toggling OFF and then back ON to "re-register" your number with Apple’s servers. 6. Update Your Carrier Settings Update Your Carrier Settings Here are the methods
Here are the methods to remove message blocking on your iPhone:
Swipe left on the name or number you want to unblock and tap . 2. Disable "Filter Unknown Senders"
Before we dive into the steps to remove message blocking, let's first check if you're blocked: