"My mobile not working properly"に関する回答Hi Nikhil, I suggest you to change the device battery and repair it through PC companion . Maybe it could help rather than changing the device for half of its price. I had the same issue.
"My Sony xperia z1 get overheated"に関する回答I had the same problem. It's common that Xperia Z1 gets overheated while using. Try to boost the device by using Clean Master and clear background running apps while using. This may help reducing the heat. It worked for me.