Turning off data roaming for better battery life

I beleive the biggest gain is had in turning off the GPS and uninstalling The Weather Channel.

u can change the settings in the weather app to NOT follow GPS

 

All things being equal, a CDMA phone consumes more power than a GSM phone. If battery life is important, you should consider using GSM as long as it has enough coverage.

Phone Radio is always searching for 3G signal if 3G Data is on. If your new smartphone is continuously searching for signal in an area with weak signal, the phone will work a lot harder and shorten battery life.

Press Home - Settings - About Phone - Battery Use - Cell standby , after touching Cell Standby you'll notice look for "Use details". Under User Details, you will find  the infamous "Time without a signal" value. If it is 50% or above 50% then the phone is consuming more battery while searching for 3G signal.

If your current location has no coverage, turn off the phone or switch it to Airplane / Flight mode.

If the 3G signal is weak, the battery will use more power to boost the signal. Consider disabling the phone's 3G feature and using the slower GPRS or EDGE instead.

Press power button until you get Power Options Menu
Select Flight mode

This will stop search for 3G signal and phone will not drain battery.

I also use Android Assistant 12 features. Under Tools tab there is Airplane mode toggle to turn on or off Airplane / Flight mode.

Other trick is to go to Home screen. Press Power/End Call button until one gets Phone options menu. Under Phone options menu is an option Flight mode.

Or Press

Home -> Settings -> Wirelees & networks -> Airplane mode

There are also a lot Apps available in Android Market for managing Airplane mode.

I do the same with my browser. For data control and battery life I use Juice defender! This free app does it all, I can set when it will automatically get data for my emails etc so the data is not on all the time. My battery lasts all day. Juice defender is one of the best aops available and many people don't know about it.

I was using Juice defender with good results then I read that the free app GREEN POWER FREE was even better so I'm using that now and yes it seems to work great so far!!!  My battery lasted yesterday  from 930am to 930PM and I still was at 40% more battery left when I put it on the charger for today. Still experimenting....

So I have put the GREEN POWER FREE app on my phone and didn't notice any difference but I never tried the settings you're using so I will try them and see. So I'm wondering if the standard battery juice is like 1 day because I charge my battery every day, sometimes twice in a 24hr period. I think it's normal use. I'm not on the net constantly either. Also what Widget do you use to turn Wi-fi on and off? I used to have the quick option to turn it on with the notification drop down bar but since the 2.2 update I don't have it anymore.

Thanks for the advice. What is go launcher ex? Is that an internet browser? Even after the 2.2 update I've noticed the phone still runs slow at times. The biggest thing I've noticed is when I exit 2 go back 2 my home page it takes a long time 4 the icons to show up. Sometimes 10 seconds or more. I don't know why it does that. Do you get that? It doesn't happen all the time but enough to be annoying