Husband keeps going through my phone

I'm kinda pissed and just confused...

The title says it all.. my husband keeps going through my phone, but I can't figure out why. He cheated on me several months ago, I should be the one going through his!! But I don't, and yet he constantly goes through mine and he has admitted to it, but I can also tell because I'll leave my phone somewhere before bed and when I wake up it's somewhere else.

I clearly have nothing to hide, I'm the faithful one 🙄 so makes me wonder what he's actually hiding on his.