well I guess thtd depend why you guys aren't talking, mayb u should write him a note or do something nice for him and tell him that you care about him and that you want things to be different between you guys... or you could just talk to him
DONT blow his phone up. it'll push him even more away. my boyfriend and I have been together for 5 and this has never happened. buuuut before I brake up with a guy I ignore them for about a week. try talking to him face to face. not over the phone. let him know that you're aware of this distance.