Why Does My man Take His Phone Every Where He Goes? [THE SCENARIO]

Tonight's Scenario comes from a female listener ?
My boyfriend might as well have his phone surgically attached to him. He takes it in the bathroom with him when he showers, to the gym with him and even sleeps with it next to his head at night. No, I haven’t been able to look through it because he won't let me even hold it. Is he hiding something or just being private ? Lets help this young lady out, what does it mean when someone keeps their phone with them ALL THE TIME !