How can I sue for violation of privacy?

My ex-husband obtained my cell phone without my knowledge. My daughter had taken it to his house without telling me. He never informed me he had it. Instead, he accessed my phone and read my emails, among other things. He is using said emails against me and has filed a request with the court to stop my alimony. He is using my private communications against me. He had no permission to access my phone and has testified to that and all of the above in a deposition (for the modification case). I feel very violated by him. I have reason to believe he accessed and read other private emails, text threads, notes, apps and pictures. Please tell me how I can bring consequences to him for this gross and intentional violation of my privacy. Thank you.