To fix the frozen or dead android phone you have to plug the Android phone into the charger. Then, you need to switch off your phone by using the standard way. Now, restart your android phone and remove the battery. When your phone does not reboot, then perform a factory reset. You should flash your phone. Join att customer service to get further help. 1-833-554-5444
United States, Computer, Fix the frozen or dead android phone via Att Customer Service 1-833-554-5444