Having your mic and camera disabled, but being connected to the internet kind of defeats the purpose aswell. It's better than nothing, but even with a device like that, powering it off doesn't gurantee that no one is tracking it. Taking off the battery does.
I went with the Galaxy XCover 6 Pro instead because it comes with a headphone jack. It also has a software switch to disable microphones, but I wouldn't put too much faith on that.