Hubungan Antara Durasi Penggunaan Smartphone Sebelum Tidur Dengan Kualitas Ti…

Increased of smartphone users associated with advantage of smartphone that has many features. One of the features is unlimited internet access, so that makes a person using smartphone excessively and it raises the issue of addictive behavior which ultimately affect the health of the body, including poor sleep quality, especially for PSIK UR students who often use their smartphone for a many kin…