For about the last month, I occasionally find my Cricket Samsung Amp Prime (Android 7.1.1) dialing #3282 (#DATA) without me initiating it. According to my call log, it started on October 1, 2018. It has happened about 6 or 7 times over about five weeks, with no noticeable pattern. It does seem to happen after I've been actively using the phone. On Cricket, this results in a "Your call can not be completed as dialed" message. I think it used to be an active feature but is no more.
I suspect that an app update is behind this, but I'm not sure which one. I have about 20 apps with phone permission enabled. Is there a way to log when an app uses phone privileges? Or straighter to the point, does anyone know which app might be causing this?