I use this phone since about 4 monthsnow and never faced any issues like hanging or restart or heating. It charges fully by about 3 hours and battery back up is very good and full charge lasts at least 1.5 days with browsing, whatsapp with connected to internet via phone 4g all the time. VOLTE voice call quality is also the best. My JIO car runs directly without any app compulsion. Never faced heating problems in my phone. It takes very nice pictures in dull light too.very good phone, I recommend this phone and brand to others also one good thing is it is MADE IN INDIA : ).