Help phone status/notification: what is "H"??

[verav]

I suddenly see a "E" or "H" in the status bar on top.

What is it and how do I turn it off?
I assume that's the reason why my battery is suddenly draining very quickly.
I had the phone on the charger overnight and even during those 8 hours it wouldn't fully charge.

 

[Szadzik]

Haha, E stands for Edge and is an old and slow type of GSM connection. H stands for HSDPA and is fast and stable.

You should be happy this is happening.