Hi, I recently got the update for 4.1.2. However, many features advertised I have not been able to utilize. For instance: being able to customize the notification panel. Talked to us cellular and they couldn't answer and then spoke with Samsung. Apparently many features are only available for certain carriers?? Anyone else have this issue or am I missing something? Frustrating that features advertised and reason for getting the SG3 end up not being available because of the carrier I have.