If you are browsing pictures/video/sound files it will use more battery power and more data vs. reading text only.
I don't really know how to ask this question in the correct manner. So please bare with me.
I have a Samsung galaxy s5 which works fine, however on random occasions the battery can drain very fast, but on other occasions stays charged for ages.
For example yestarday I was using my phone to browse the Web for an hour or so and it only used about 2% battery. However today I have used the Web for about half an hour and already it has used 10% battery.
All apps have been closed and smart manger has cleaned up the ram.
What might cause this to randomly use much more battery than before.
I must say most of the time the phone battery is fine but
ven turning this off dosent help the situation.
Thanks for any advice.

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