hi there, you can use data and other features but when it is needed, u r absolutely right boss, switch off wifi gps and data when not needed, reduce screen timeout, reduce the brightness of lcd to minimum, use less widgets, try to use advance task manager to close your extra running applications which u open and then it never closed, you will notice a far nice difference of battery.

 

You can use apnddroid to disable cell data when you know you don't need it - that may help. Also turn screen brightness down all the way.

 

Install SetCPU. Change CPU to 240mhz when screen is off. Force CPU to 320mhz (240mhz was too laggy when i tried) powersave when battery is less than 15%

This increased my battery tremendously

 

Compared to the Galaxy S, this phone doesn't need any battery conserving.

 

what could be the cause of my phone taking long to load setup before initiualizing

 

I don't know ... what does that have to do with battery life ?

 

With a Green Power Pro battery saver App I can go all day on one battery, spending hours using Wife and GPS is always on, but I'm normally not using it.

 

What's the real story on power saving on the Ideos 8150? Do you save energy on always 2G or on 3G?

The Ideos 8150 specs in gsmarena.com says that re battery consumption:

Standby: Up to 220 h (2G) / Up to 300 h (3G)
Talktime: Up to 4 h (2G) / Up to 5 h (3G)

Huawei U8150 IDEOS - Full phone specifications

Was this a typo on gsmarena's part?

Personally, I noticed that my Ideos' power drains much faster on 2G than in 3G.

 

The last two days my battery has suddenly started draining down fast with 91% of it being Android System usage. Before by 7PM on a normal day I still had 50% battery available. Now I have less than 30% or worse.

What I think has been different the past two days is that when I have been outside - - away from WiFi, with my data plan ALL USED UP - and I've tried to place phone calls with Google Voice, the calls have not gone through but the 3G indicator has been jumping around.

 

+1 for SetCPU. It changes your processor speed according to the demands on it, even overclocking it about 10% when working hard. My phone now lasts 3-5 days, depending on usage.

The caveat is that you need to root the phone first.

I've said before that I don't understand why Android isn't shipped like this as standard.