In the global market many smartphones vendors struggle to reach more customers. The competition leads to vendors developing technologies that are platform dependent, to keep their customers. This means that customers cannot take advantage of their skills in the integration of other operating systems, which makes them locked-in with their current supplier. Therefore we want to examine the concept of skill transferability and see how knowledge can be transferred to another operating system. To examine this we conducted a test where Android users had to perform tasks on iOS and Windows Phone. These tests were observed to examine whether the knowledge required to perform the task where transferable from Android or not. The results showed that when an operating system is similar to Android it provides more opportunity for the users to use their previous knowledge about their operating system and the technology play a major role in the differences between various ages.