Originally Posted by Shadowprince94
It's not a problem in the rom. In the newer FB apps, there is no option to sync FB friends' number. Very sad thing, but that's it.
I upgraded to KitKat and now the sync is just working fine.
My personal conclusion is that the application is somehow aware of the ROM on which it's running and based on that it enables or disables the sync option. Why do I conclude this? Well because I manually installed the very same apk file in different roms and it does behave different.
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