Samsung s6.battery heats up and shows 57% but switches off then would have to plug charger and will switch on for 10mins and same will happen .this started when my charge port broke and the person fixed it the battery was going flat so bought battery from him and it started to heat up and took it brace and he said ic is gone cost £90 .already spent £85 on it .so pls would be so kind and see what you can do.