Battery state

[AeroZink]

My xperia Z1 has 3000mAh battery. But,I can use my phone only for a while. This is why I use many apps? And also when I open mobile data, the phone become an iron. It is too hot. Is this because of user's falt or normal?

[Phy]

That's normal, heavy apps and games will drain the battery faster and will heat up the phone.