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2015-04-21 12:56 PM
You need to wait until the update is approved for your country and operator. I'm afraid i can't say when an update will be available for a certain country or operator.
Regarding Android is upgrading, are you perhaps using an apps that clears your cache?
If you still haven't received the update, try clearing data for What's New and Update Service under Settings -> Apps -> All and restart your phone.
2015-04-21 10:59 PM
2015-08-16 12:57 PM