1. Removing the power supply (as in unplugging) is most effective.
2. Disconnecting from the antenna (cable hookup, internet connection) works well, and leave open the option of using the hardware for other purposes.
3. It seems most frum people addicted to things, somehow manage to break their addictions on Shabbos and Yuntuf (which according to the professional psychologists isn’t possible if they are truely addicted).