Had the same issue with our IPHONE 8 and IPHONE 12s. All Txt to android users was getting the “Free Msg: Unable to send message- Message Blocking is active”. After trying most suggestions online, BTW none worked. Called T-Mobile support and was transferred to a specialist who walked me through similar steps. None worked. What worked was T-Mobile had the blocking active on the account. T-Mobile needed to fix on their side (removed the blocking) and I can now txt with family members nationwide and they can txt me without getting blocked. Thanks for fixing T-Mobile…….
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