Android 2.2 FroYo and battery life

faster loading means less cpu time means less power. Google states JIT in 2.2 uses less cpu and battery

Android Developers Blog: Dalvik JIT

 

Do anyone know if the droid by motorola will be getting the 2.2 update? Any idea when?

 

Probably in a few months but they haven't announced anything yet.

 

I've just upgraded to 2.2 on Desire, I used the juicedefender app to prolong battery life slightly and with normal use would last 1 - 1.5 days. Since upgrade the longest it has lasted it 7 hours. Something is seriously wrong, even on standby with nothing on overnight it still drained at an almost maximum rate and was dead by 7 am. Not happy.

 

Yeah, to follow up on tinmice's, post, I have a Moto Droid, and I manually updated to 2.2 on Tuesday night. I barely got 9 hours out of it yesterday, and I'm a light user, it sits on my desk most of the day, except when I play the occasional game in the men's room. Today it looks like I'm going to get about the same. I used to get 12-15 hours out of it pre-2.2 update.

 

I don't notice any difference in battery life from 2.1 to 2.2 myself.

 

i had a bunch of widgets on my homescreen, and my display was using about 78% of my battery, and my battery was dead after about 6 hours even on standby. I removed most of my widgets and it seems to have worked. my battery has been unplugged for over 12 hours, and my battery isn't even at half. Not 100% sure if this is what helped it. Give it a try and let me know. BTW, i am using the motorola droid with 2.2

 

do people even read before they start making up stuff?

worried about the battery life because of extra performance.. lol

 

do a hard reset maybe problems solved

 

No problems here yet! I am still waiting for the Second OTA Update for my Motorola Droid, however. I Force Installed the Origional OTA Update from the Google Website Leak earlier this week. Just fyi.

 

I changed to a fresh conditioned battery and went to the store. I looked at my phone and it told me of the DL. I started the download and shopped for 15min or so, took another 5min for phone to reboot.

First thing I noticed was my battery was at 75%.

Went home and had the phone idling for another 1hr. I looked at the phone again and it was down to 25%. So yes I can tell the difference. Not cool

 

Like previous post writer said, wipe phone. then install again. Probe something or some app causing it.

 

I've got an EVO on 2.2 and I went the hard reset route (used MyBackup Pro to make it less painful). I fully charged the battery about 2 hours ago and let the phone just idle since then. The battery is now at 98%. I'm pretty happy with that.

 

It's near enough doubled my HTC desire's battery life. It'd just about last a full day before, but since the 2.2 update I've actually got two days out of it a couple of times.

 

I'm seeing slightly improved batter life with 2.2. Moto Droid.

 

Thanks for the useful information.

 

The Battery life on my Droid went down the crapper after I updated. Not a happy camper

 

Wow if this is true, then maybe some people really are just doing something wrong. Did you wipe your phone clean before you did the install?

 

I haven't notice the battery life issue but I did notice that there are more active apps than before. I use an app manager to shut off unnecessary apps so maybe that's why I haven't had any problems.

I use System Panel Lite to manage running apps.

 

I upgraded my Moto Driod (original) recently and now I am lucky to get 6-8 hours of life outta the phone where I used to get 1.5 days.

I'm not a heavy app user, although I do have several installed that I use on occasion. Weather Bug is the only app that runs dynamically, so most of the time the phone is idle.

Not too happy with what I'm getting.

If I blow the phone away to do a hard reset now, will I get the upgrade message again? My wife's phone didn't get the upgrade message until a week after I'd gotten mine & upgraded.

Cheers,
C

 

A factory reset will not revert you to an older OS. There are several posts in. These forums on how to perform a reset. It just wipes data on the phones internal memory/storage. These are the directions I followed. Before executing, in order for your apps to download for you again after you re-activate and set up Google again, go to Privacy settings and make the two boxes are checked: Back up my Data and automatically restore.

How to hard reset the Motorola DROID - Know Your Cell

 

I've recently upgraded my Droid to 2.2, and have noticed a significant drop in battery life. Apparently I'm not the only one. Can barely get 6 hours of moderate use. Not cool.

 

I have upgraded my HTC Desire from 2.1 to 2.2. I found the battery life to be reduced by at least 20%.
Having charged my desire overnight, normally my battery used to go to amber/red at around 9-10 PM.
But from the time I upgraded to 2.2. The battery started to go to amber/red by 6-7 in the evening.
My usage pattern has not changed and I still use the same apps I used to use when I was on 2.1. It has been 5 days since I upgraded and I have noticed this reduction in battery life every day.

 

I haven't noticed any change in battery life after my Droid went from 2.1 to 2.2.