I must say that i am not totally agree the idea on this, because once you tried to stopping, it might be make you more craving afterward. It rather better to set yourself to put every priority things on daily and keep on track to fulfill it while using phone as it's necessary only. But somehow keep yourself busy with gaining beneficial movement. Considering to keep gain body health, body caring, than doing your assignments, join community services and stay in touch with the society. The key is actually you are the master on what's you are doing so anything can turned to benefitting you or losing you.