Phone smash?

Everytime I ask my man if he is looking at women online it becomes a huge blowout fight and he throws his phone basically smashing the screen.

I honestly just wanted to know because he was on his phone a lot and acting secretive about it. Also I tried to come at nicely and like understanding because i didn't want him to think i was judging him.

Is it wrong that I asked ? He made me feel like a terrible person for asking as if I didn't trust him? But my gut feeling was going off and I figured I might as well ask what's going on.

EDIT:

Sorry I should say. I've only brought it up 3 separate times within a 3 year time frame, all 3 times he flipped and threw his phone, he also punched a hole in the wall on the last 2 times. He has made me feel like I was the worst person for even asking. Like it was the only option left, he turns his phone off everytime I walk in the room, acts like I'm trying to look at it when I'm not and gets mad at me over small misunderstandings. I thought if I asked him that is proper communication in a relationship and that I was giving him a chance to be honest. I want to trust him and feel like I should be able to but this feeling wouldn't go away? He has never cheated that I know of but there have been a few shady hidden friendships. We've been together 10 years for reference.