If the other party turns off the traffic, can you still receive the short message I sent?

Hello, SMS sending does not require traffic. But we need network communication software such as WeChat.

So if you send a text message, you can receive it as long as the other party is in the service area and the signal is good.

But if it's WeChat, you can't receive it if you turn off the traffic, and you can only receive it if you turn on the traffic.