Are you satisfied with your phone's battery?

Yes, poor battery backup has been a concern since the advent of smartphones in mobile technology. I own a Samsung Galaxy and I am not at all satisfied with the performance of my battery. It needs regular charging to keep it alive. I also keep a basic mobile phone of Samsung as a standby option and whenever the smartphone is out of energy I will use my basic phone. It is has an amazing battery backup of 4-5 days.

But I wonder why mobile manufacturing companies are not so concerned about this issue. They have advanced a lot in designing various user-friendly features and phone models, but still low battery backup has remained as a major issue.