Facebook developers had faced many challenges when developing their app for older platforms like Android 2.2 Froyo and Android 2.3 Gingerbread. When Facebook completely revamped its app last year to provide a better user experience, they discovered that the app did not play well with older Android devices. They discovered that the problem had to do with a program called "dexopt" which determines a fixed-size buffer called "LinearAlloc" of apps installed on a specific device. While the buffer size is 8 or 16 MB in size for newer Android versions like Ice Cream Sandwich and Jelly Bean, its only 5 MB in the older versions.
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