Although you have stated that there are things that you don't like about him. Well there obviously MUST be things that you do like or else you wouldn't be asking this question. Could it be that there is more things that you DO like over the things that you DON'T like about him?
You missing him is missing the aspects that you DO like about him. But there is also another factor that you might not want to admit to. I bet a part of your ego wants him to be obsessing over you and since he has severed the communication you are coming to the realization that he must not be obsessing over you. This is not appealing to our egos.
So you monitor your phone and your ego is baffled why he is not communicating with you. Your ego states that you are worth his attention but your attention given to him should be your call or under your control. So you feel out of control.
Any time you feel out of control you want to solve the problem to put your mind back into a state of balance and control. This means that you will ignore or temporarily forget about the aspects of his character that you didn't like until you can rationalize why he is able to sever communication with you.
It is a known psychological issue.
You have a few possible solutions.
Replace his attention with someone else. Find someone who you ARE interested in and any obsession you have will be replaced by this new person who you are interested in. However; this is problematic because the issue is not fully resolved, it is only transformed via distraction.
Another solution is to actually re-initiate communication with him. This solution seems counter intuitive because you don't want to be the one chasing after his attention. Instead you want him to be chasing after your attention. So if you initiate the conversation you are giving him your attention which you don't want to do. It can become a solution because of how he reacts to this new attention. When you see his reaction it will nullify your obsession. However; if he doesn't respond at all it can backfire and increase your obsession.
The best solution is just to let it be how it's going to be naturally. If he never speaks to you again then so be it. No loss right? If he does speak to you then you can decide how you want to interact with him. No real decision needs to be made, just let things go how they will go with the least amount of effort or analysis.