What two operating systems are NOT commonly used on smartphones?
A)Symbian and Palm OS
B)iPhone OS and RIM OS
C)HP UX and z/OS
D)Android and Microsoft Windows Mobile

Question

Quizplus · Accepted Answer

HP UX and z/OS are primarily used on mainframe and server systems, and are not commonly used on smartphones. Symbian and Palm OS were once commonly used on smartphones but have been largely replaced by newer operating systems. iPhone OS (now known as iOS) and RIM OS (now known as BlackBerry OS) were previously popular on smartphones, but their market share has decreased in recent years. Android and Microsoft Windows Mobile are currently popular operating systems for smartphones.

What Two Operating Systems Are NOT Commonly Used on Smartphones