how to block set messages I don't want
how to block unwanted text messages that are spam
iPhone 8 Plus, iOS 13
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“Text messages” are of two very different types.
- iMessages, sent to/from other Apple devices. These can be blocked at Settings > Messages > Filter Unknown Senders.
- SMS text messages, sent to/from other cellular telephones. These probably cannot be blocked, but if they can, it would be done by your cellular carrier.