There are. Cell phones. In. Prisons. People who have never even seen a fraction of the wealth that Elizabeth Holmes defrauded people out of are able to get them. She can very well wind up on a Web3 social platform anonymously by 2027, trading crypto while funding SciHub.
I am sure there are further carrots and sticks inside the prison, and of course 11 years is not life so she isn’t immune to extra punishment for more crimes.
I think it's possible someone gets her a phone. But she can't get away with streaming or even posting selfies. She'd have to stick with texting or using pseudonyms.
From my friend who was in: they get some daily time, and all their email is monitored. I could send him mail, but it was through the prison's website, not a regular email.
I imagine the web surfing they can do is fairly limited, but I didn't ask.
I also found out that you can buy anything in prison, including a cell phone, or drugs. Ratting out the people who actually sell the stuff is a great way to get yourself killed.