You sound like you entered the relationship and remained because you thought you could possibly change him into your true ideal.
You can't. He has to want change and change himself. He seems content with who he is.
You don't have a husband, you have a roommate that you've had children with that doesnt help and sounds like he has emotionally disconnected and detached.
He's over it all.
Sounds like you are too.
Plus, if he's on his phone all the time, it's highly likely he's cheating. Emotionally perhaps even physically.
You two have drifted apart and have grown in different directions.
You both aren't interested in each other.
People change, and relationships change.
It happens.
A lot of people enter relationships thinking everything will remain the same always...
Maybe you never should have married him at all...
Would it be so badly divorcing him and moving on??? Especially since he doesn't do much in regards of parenting, the relationship, etc...??
Counseling isn't going to change anything unless the both of you want it and put effort in it....
Even with both of you committed to possibly improving things....some things aren't meant to last the remainder of your life.
The relationship has run it's course..if it was ever on course to begin with..
This is a decision you have to make.
Stay in misery, and unhappiness,
Or leave, and possibly be at peace and happy.