Joke Collection Website - Blessing messages - Texting with iphone users will display text messages instead of imessage. Is it because the other party didn't add my number to the address book?

Texting with iphone users will display text messages instead of imessage. Is it because the other party didn't add my number to the address book?

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First of all, imessage is iphone-to-iphone, which is sent through traffic. There is no charge for sending text messages, only traffic charges.

If the other party doesn't open traffic or has no wireless network. The message is walking.

So from this point of view, it has nothing to do with adding it to the address book.