am I wrong?

So I just got called a bitch by my husband for going through his phone. Everytime he even touches my phone he goes through everything. But the ONE time I do it to him he yells at me saying he's heartbroken and that I'm a bitch and told me "fuck you". He said he didn't deserve it. But yet he goes through mine on almost a regular basis. Am I in the wrong for doing it? I'm confused as to why he's so mad about it.