Know if someone used my phone without my permission

[Android Central Question]

Hello,

I would like to know if there's a way to know if someone used my phone at a specific time when I wasn't using it.

I have a Samsung with Kitkat 4.4.4

I would love to know if there's a way to find out if they accessed apps and maybe the gallery.

I found that in some android phones you can put the code * # * # 4636 # * # *
and that will give you a list of the last apps that were used and the time.

My Samsung don't have that, I heard I can make it work if I root my device, will that help?

I need something please help me experts! This will mean the world to me. I have depression and I can' t stop worrying about this for about 4 days now.
This is a learning experience for me, so next time I will be more careful.

But I just want to know if my device was used last Tuesday morning. That's all. I won't even care about the details.

I will be so grateful if you help me out.

 

[Rukbat]

I don't have a phone running 4.4.4 so I can't check, but if you look in Play for kiosk you may find some apps you can use. They set the phone up so that only the apps you allow can be run, and that could be none. (And if the app is password protected [don't forget to write down the password and keep it somewhere at home], no one can turn it off but you.)