How to set a message reading receipt, vivo-y35a

You can find this problem by trying two Apple phones.

Under normal circumstances, Apple has the function of receiving short messages.

This function requires the other party's Apple device, and the other party has opened the read receipt.

In Settings-Info-Open Read Receipt. As long as the other party opens it, you can see whether the other party has read it.

Similarly, if the other party doesn't turn on this function, you won't see it. We can only see whether the information reaches the other party's mobile phone.