Confused about my iphone and receiving texts?

Why do i not receive sms with my Wi-Fi/cellular data off? Is this to do with my settings? How do i fix?

The text message does not just appear on phones, you need a signal in order for the phone to be able to recognize the message and interpret it into what you see on the screen. The iPhone uses both Wi-Fi and cellular signals to receive and interpret messages. Its like how you can't make a call when you have bad service, you can't do any of the cellular functions of the phone without some sort of means to receive the message in the first place.

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