My phone went hot then turned itself off yesterday evening when it rebooted it won't go past the Samsung logo I've tried to reboot it but no joy can't take the battery out either as is a sealed unit please help!!
Welcome to Android Central! Try booting into Recovery and wiping the cache partition. Follow the steps in this video, but instead of selecting Wipe Data/Factory Reset, make sure you select Wipe Cache Partition. When complete, then select Reboot System Now.