In today's society, smartphone usage in active recreation (natural environment) is somewhat controversial because some believe that smartphones promote an access to resources; however, some believe that smartphones distract attention from environment; therefore, the present study aims at determining adolescents' smartphone usage in active recreation and natural environment. An instrument of survey (non-standardized) was carried out six months (January -June, 2022) through an intentional sampling of survey group size of 2108 (100%) adolescent boys and girls: (i) Urban adolescent boys and girls (42.50%, n = 896); (ii) Rural adolescent boys and girls (57.50%, n = 1212), aged 18.50 ± .40 years. Statistics (e.g., descriptive, inferential) was used to analyze and compare the data. When considering the adolescents' smartphone usage, on average, 45.00% (n = 949) of survey group spent 1 -3 hours of using smartphones and about 38.32% (n = 808) of survey group spent time using smartphones in active recreation (natural environment). About 4.80% (n = 102) of survey group spent time using specific, recreation apps (e.g., Geocaching, GeoCaches). Increasing the physical activity is necessary; therefore, smartphone usage (recreation apps) may increase time spent in active recreation and influence physical activity levels of adolescents.