3G uses more power, but as I can see, the difference is only noticeable if you use the data connection.
On standby I don't see much difference.
I use my phone a lot. I don't think there is any ROM that can produce more than 10% advantage over my current one. (maybe a GB ROM)
Just to see, my battery stats today is the following:
12% of battery left after 11 hour
- Display 42%
- Voice calls 24%
- Cell Standby 7%
- Android System 5%
- WiFi 5%
- PowerAMP 4%
- Bluetooth 3%
- Android OS 3%
- UC Mini 2%
- Phone idle 2%
I'm on 3G and WiFi turned on about 8 hour (sleep policy is turn off on standby).
Sync turned on, GPS off. Display brightness auto.
Listening music over Bluetooth about 2 hours.
Edited by rhen, 11 June 2014 - 04:16 PM.