Honest Review. Camera just fine Battery was grt lasted 1 whole day normal working Finger print sensor did not worked sometimes. Mobile did not hanged. A budget phone it was with decent performance,until recently I had restarting problems. When googled, Was surprised that my problem was common in m31 & m21. my bad luck it started after Mobile warranty was over by 2 months. Samsung care said mother board was faulty, replacement will cost 6k. So personally, i do not recommend this particular model m21.####[['Camera', 'Camera#General', 'positive'], ['Battery', 'Battery/Longevity#Standby Time', 'positive'], ['Finger print sensor', 'System#Lock Screen Design', 'negative'], ['phone', 'Price#Price', 'positive'], ['performance', 'Performance#General', 'positive'], ['replacement', 'After-sales Service#Exchange/Warranty/Return', 'negative'], ['Mobile warranty', 'After-sales Service#Exchange/Warranty/Return', 'negative'], ['do not recommend', 'Buyer Attitude#Recommendable', 'negative'], ['restarting problems', 'Performance#General', 'negative']]