This question is delusional...
Why? because thread starter's agument includes "US."
There's no such thing as "US," preferably not all of the US here in the phcorner doing such thing as s†éáling data from telecom.
How can we be sure that all of us doing that manner?
But your question leaves us a great awareness of what the Bible stands for word s†éáling.
Yes, s†éáling something from others is considered a sin. But you must expressly point out the argument of unreasonable doubt that we sinned.
One of the reason why you have considerably committed a sin or a crime when you are found guilty in your actions.
I will ask a question to clarify if the accusation is unfounded or substantiated.
Is your data available online or not? the answer is Yes.
Is your data can be opened/accessible online or not? Answer Can be opened/accessible online, yes.
Are these services from telco is blocked or unblocked all the time? The Answer is freed all the time, yes. The fact that we can access the internet all the time, and also we have the way on how to access it via using a VPN or another data provider, which is from another network data server, yes it is.
Are these methods allowed by the ISP? The answer is yes. If not, your sim has no services at all, meaning your sim is dead.
Is this method a crime? The answer is no, depending on how you will use it, and it will be another issue.
Is ethical häçking a crime? The answer is no, why because pen-testing of a good häçker is not a crime.
So the answer to a particular question now has the basis.
You can make a decision for yourself about what you will do.