Sure, but turning phones on and off is suspicious.
If the government is interested in you at a high enough level, you really shouldn’t be using phones at all. (Hell, just talking about this probably has all of us keyword (behaviorally) tagged for IP monitoring.) Reminds me a bit of how Las Vegas casinos ban card counting, but are actually just fine with most card counting because card counting is actually really, really hard to do at a high enough level to work, so most card counters loose money to the casino just like everybody else. Same for “burner” phones. It’s probably very nice of you to segregate all of your clandestine phone calls to burner phones so the government can know exact what it is that you don’t want them to know.
