Many users don't realize that enabling "Maximum Protection" in Scam Shield automatically turns off all shortcode texting. Disabling this specific toggle restores functionality.
For legal and security reasons, T-Mobile permanently blocks certain shortcodes. Do not waste time trying to unblock these: how to unblock shortcode texting t mobile work
When calling T-Mobile Support (611), use the following terminology to speed up the process: Many users don't realize that enabling "Maximum Protection"
T-Mobile’s Scam Shield includes a toggle that blocks all non-10-digit numbers. how to unblock shortcode texting t mobile work