Service not registering

[librs]

My 2 day old Iphone 11 had bars of service and LTE, but when I treid to send imessages, snapchats, or use safari, the phone would give me the notification "please connect to cellular data or wifi to use the internet"  concerned my phone may be defective as this issue is very simular to the one that 'broke' my old phone earlier this week (sim card reader stopped working) any advise?  

[deloused]

Reset the network connection