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Young Koreans favor iPhones over Samsung Galaxy: survey
(www.koreaherald.com)
This is a most excellent place for technology news and articles.
Yeah, although to some extent stuff like app-store lock-in does restrict easily jumping from one ecosphere to another.
If one is an Android user, there is at least some flexibility in switching between different phone vendors and styles, but in many places Samsung is pretty dominant, while others like LG have dropped out of the game entirely.