When I bought my Galaxy A51 Battery backup of this device was not that great. After that I came to a Conclusion. I've disabled some of apps running in background, and Turned on Adaptive Power Saving mode. Thanks to samsung for giving this feature. What it does actually, it learns my usage pattern and turn on medium power saving mode to save battery while piggies is not in use. Now my device battery backup is good. I'm requesting to my fellow friends who are facing battery backup problem to use this feature to save battery while your phone is not in use. It may be door your battery backup problem.
