I don't want to be married to my husband anymore and think it's time for a divorce

I've been with my husband for 7 years and have 3 kids together . He has put me through hell and back but we always seem to make it through. I'm not going to go much into detail but he put everyone before his family and is a bad husband to me and treats me bad. I tried to tell him how I feel but he doesn't get it . Everytime we are together he's always on his phone like always even when I try to talk to him .He's on his phone as I'm writing this. When he's with his friends he is never on his phone . Its very hard to get a hold of him. I feel like he is hiding something idk what it is but no one is on their phone that much unless they are on call or something. I can see from a distance he changes his app or locks his phone when I walk up to him. He puts his phone at an angle so I cant see no matter what it is that he is doing. I am all for privacy but I feel like hes hiding something big and not good. I let him see my phone all the time which I dont mind. I have checked in his phone in the past I know shame on me only cause he lies a lot and yes I have tried to talk to him ... everytime I went through his phone he had so many lies that it hurt me because I believed him and trusted him .As time passes by he gives more attention to his friends and his phone more than me and his own family . I know its time to walk away and I could careless about him .