Cellular data
Cellular data is not working in my iphone12 pro max from last couple of weeks. I tried my SIM to another phone, it works properly .
iPhone 12 Pro Max, iOS 16
If you go to Settings>Cellular, is Cellular data turned on? This shows how to do that. Use cellular data on your iPhone or iPad - Apple Support If you still experience problems with your cellular data, your carrier may need to get involved.