I have a galaxy s4 and i love it but the battery life is extremely poor. I want to know if i have a defective battery or something along those lines. For example, My battery dropped from 100 percent to about 83 in about 10 minutes after i quickly checked facebook and placed in my pocket. My phone does heat up quite a bit as well, even when i just browse my social media. The phone also charges very slowly and the battery drains faster than i can use it. As i typed this on my laptop, my phone just turned on and sat there, i didnt touch it and it dropped from 40 to 36 percent. Also, my phone screen always stays on when i charge it, how do i stop that? Any suggestions in general on how i can fix this?