If you are on Android, temporarily turning off RCS (Chat Features) in Google Messages can sometimes force a shortcode through via standard SMS fallback. Aargh! Finally solved T-Mobile blocking of SMS Short Codes
"I need you to check my line for a on my account. I cannot receive 6-digit verification texts. Please remove any blocks labeled 'Premium SMS,' 'Third-party billing,' or 'Shortcode campaign filtering.'" how to unblock shortcode texting t mobile work
