It can work well if you're not too busy with your phone. If you constantly chat, use the net, e-mail then it isn't too good. It turns off Wifi and Mobile Data when the screen is off, but there is a slight delay obviously. That can be annoying because sometimes the phone goes a little funny if it's doing that every few minutes.
Also I use my widgets and they don't get updated until you get a connection. Definitely recommended if you aren't on your phone so frequently.
As Velo said, the screen takes up the most battery.
It can work well if you're not too busy with your phone. If you constantly chat, use the net, e-mail then it isn't too good. It turns off Wifi and Mobile Data when the screen is off, but there is a slight delay obviously. That can be annoying because sometimes the phone goes a little funny if it's doing that every few minutes.
Also I use my widgets and they don't get updated until you get a connection. Definitely recommended if you aren't on your phone so frequently.
As Velo said, the screen takes up the most battery.