I was dying to have a dual sim branded mobile and waited 4 months for core prime launch when I came to know about it on internet. The patience paid good results. Today after 3 months of buying it I feel happy for my choice.
Best part about it is that it never hangs and is much better than my samsung note1. Also on wifi it lasts for full day on heavy use else if used only for few hours the battery lasts for 3 days. What more could I have expected in such a mid range phone. Thanks samsung.