Is the relationship with the parents good? If yes then maybe try taking him to the gym, going camping/on a hike etc. Once you realize that you can get dopamine

Is the relationship with the parents good? If yes then maybe try taking him to the gym, going camping/on a hike etc. Once you realize that you can get dopamine from sources other than a screen it becomes easier to break that cycle of addiction. The actual root cause to me sounds like lack of fulfillment or maybe social anxiety. You can't just take away the computer if you don't have anything to replace it with.