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https://qooah.com/2014/05/04/android-4-4-kitkat-%e5%8d%87%e7%b4%9a%e7%b7%a9%e6%85%a2-jelly-bean%e4%bb%8d%e6%98%af%e5%a4%9a%e6%95%b8/
Android 4.4 Kitkat 升級緩慢, Jelly Bean仍是多數