My iPhone 14 Pro sometimes unable connect to cellular data

It appears you might be experiencing a data connection issue. There are two possible reasons:

• No Data Plan: Your SIM card might not have a data plan included. This means it can't access the internet using mobile data.
• Data Limit Reached: Your current data plan might have a data limit. If you've used up all the allocated data for your billing cycle, your carrier might have restricted your access to mobile data.