Hello. I have purchase the Samsung Galaxy S3 from a seller here in Greece and since upgrading to Jelly Bean 4.1.2 have had an issue with NFC. I reset the phone but problem does exist.The Icon in the notification bar to turn it on/off is blank, and nothing happens when I press it. If I then go into Settings>More Settings and then turn NFC on, it works. The icon in the Notification Bar then goes green and the NFC icon appears. However, then when I press the icon in the Notification bar I get the "Unfortunately, System UI has stopped." message, and I need to restart the phone. Have tried adding and removing the icon from the notifications bar, but that hasn't helped. Is this a bug? I have heared that some people have the same problem.