The facts that the wireless technologies (1) are more convenient; and (2) need less skill than desktop computers, play a crucial role to decrease digital gap in rural areas. This study employed the Bayesian Confirmatory Factor Analysis (CFA) to design a mobile training system in rural areas of Iran. It categorized challenges, potential, and requirements of such mobile training system into 6, 3, and 4 factors, respectively. Namely, it pointed out and, respectively, ranked (1) the system's challenges as "Human, Phone Company, Organizational, Technical, Expertise, and Security"; (2) "Post harvest, Pre-cultivation, and Crop cultivation & harvesting stages" as the system's potentials; and (3) "Attitude toward the system, Mobile Skills, Self-directed learning skills, and Opinion about the price" as the system's requirements.