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Cerberus , yes i got OTA KK update but installed sling 2.2, it was better than stock except factory reset issue. However, Korean rom does not allow you to make video call and gives "not available while roaming". Other custom roms don't have video call option. And yeah, all international mobiles have this option.of course, I have tested simple Nokia on 3G for video call.
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Bro I m talking about video call provided by network (mobilink , zong etc) like voice call. You can dial number to make video call on your network without any such app.