Please help me with my relationship.

I don’t know what to do anymore, me and my boyfriend used to be the sweetest in the world ect. we’ve been together for 3 years and lately he’s just been rude to me, he’s always on his phone when i talk to him and i get angry, and when he is ready to listen he falls asleep 😅, even his brother who lives with us sees he has a problem with his phone. he doesn’t talk to me or even say nice things to me. he supports me and loves me as i’m going into college soon and he wants me to quit my job just so i can pursue my education. i just don’t know what i’m suppose to do anymore? how can i talk to him and get him to communicate better? even when i tell him it’s affecting our relationship he doesn’t listen because he’s on his phone again.. i’m not joking. any help? i’m getting tired.