I was desperately looking towards updating Nexus 4 to get restricted profiles feature. But it was very unfortunate to know that this feature was only for tablets. I came to know about Nokia's patent over this and hence have no hope to get it any soon. Is there any way? or will it be feasible to flesh 4.3 for Nexus 7 (tablet version) on Nexus 4 (Phone)? Else, is there any other utility that can serve my purpose? My phone keeps passing through family members and there are few apps and other content that I don't want to share with them.