My Husband is Always on His Phone: What Can I Do?

Hello Honorable Rabbi and thank you very much. There is something that bothers me a lot in married life – the time and relationship of my husband with his phone. He can sit for the entire day without lifting his eyes from the screen. This is an issue that has been brought up in the past that almost led to separation even after an attempt to go to therapy. It is difficult for me to think that this is addiction, but perhaps this is a possibility? How can I determine if this is an addiction and how much to act? Or another way for me to see hope in life with him… because all of this causes me to feel more distant every day as if he committed his life to his phone and not me… I will add that this is something that he struggled with for many more years than we have been together, and he is aware of the problem, but does not act. Thank you very much, I appreciate your help.