Samsung ne ye misconception nehi banaya. Anyone with some knowledge about li-on batteries will you tell you that. It's basic chemistry.And tumhe keise pata chala koi degradation nehi hua?? Check the battery health using some apps and confirm karo.Haa...
We shouldn't charge our phone's battery to 100%. At 100 the battery may be bit unstable. Always try to keep your battery between 10-90% for best battery health.