Not receiving sms messages from other iPhone user
It receiving sms messages from one iPhone user
It receiving sms messages from one iPhone user
Be certain you understand this.
What is the difference between iMessage and SMS/MMS? - Apple Support
An iPhone user typically does not send another iPhone user an SMS message. Rather iMessage is used as the communication method.
Be certain you understand this.
What is the difference between iMessage and SMS/MMS? - Apple Support
An iPhone user typically does not send another iPhone user an SMS message. Rather iMessage is used as the communication method.
Not receiving sms messages from other iPhone user