Facebook Flex is the unique feature that allows ZONG users to stay connected with Facebook even with zero balance.
Flex feature allows users to switch between DATA mode and FREE mode of Facebook.
Zong users can enjoy Facebook even without balance by switching to the FREE mode, in which they will be able to post statuses, likes, comments, chat, check-ins, send friend requests.
In order to view rich content such as videos, HD photos and external links, customers can switch to DATA mode and they will be charged as per their data plan.
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