hi mt6305 is supply ic in china mostly become hot when u insert batery or on supply its gives shortage of 32 or more its due to supply ic mt 6305 and if software is okey but switching on supply 2 to 7 but not power on just chang the mt6305 with any damage china phone i change 3 mt6305 and 100% reults .if anyone did already then sorry cuz i come to know this now and share it here ty