Do you own a Galaxy S4 or S4 Active? If so, check the serial number. If it has a BD at the beginning, take it to a repair centre or shop. They should replace it for you free of charge. Samsung are moments away from a recall. Customers at my workplace are bringing phones in that have been set alight due to these faulty batteries. We've been told to replace batteries even on Out Of Warranty units so don't worry if you have a broken screen or w/e it will still get replaced for you.