Android phones, apps and tablets

I turn off wifi all day (until I'm home at night) and refreshing emails I turn off during the day (turn on at lunch and evening) when I'm at my desk I've got the app for chrome which pops up with Gmail so I don't need it at work.

Don't turn off 3g during the day, suppose I could but I easily get a day out of my battery, It's never dead when I come to charge it at the evening and I have it on off the charger from 6am till 1030-11 at night.

This.
I am on HTC Sensation.
Vodafone sucks at my flat, have to be at certain areas for it to have reception!