The purpose of this study was to analyze product quality, product diversity,
and brand trust on purchasing decisions for Samsung mobile phones by students at
Purwokerto College. The population of this research is students at Purwokerto
College who own and use Samsung mobile phones. The sampling technique used
was non-probability sampling with purposive sampling method. Total of samples is
110 respondents with several criteria that have been required. Collecting data
using a questionnaire. The results of regression analysis show that simultaneously
product quality, product diversity, and brand trust on purchasing decisions,
product quality partially has a significant positive effect on purchasing decisions,
product diversity partially has a significant positive effect on purchasing decisions,
brand trust partially has a significant positive effect on decisions purchase.