Most Power Saving Radio Rom?

[efayes]

Can anyone please recommend some REALLY power saving Radio rom?
I'm currently using 1.54.30

[PaY87]

I like 1.54.07.00. Its a good compromis between power and battery drain.
I think 1.47 was the version with the lowest battery drain for me yet... :o

[kipe]

1.47.00.10 seems to do the job for me.. moderate usage of voice & data (UMTS 2100)..

[efayes]

thank you so much for responding... :-) i will try 1.54.07...

[galaxys]

yes, 1.47 is the best radio I also have used.

[efayes]

i'm trying 1.54.07...using it now...will see how is the battery drainage...

what is so good about 1.47 anyway? :-) just to compare...

[mattk_r]

2 cents on this topic - the observation of battery drain is somewhat subjective. I'd suggest someone do an extended test where the phone has a current drain logging program and track drain for each phone mode - data connection - transfer / phone use / idle and do a statistical comparison.

With a lack of good data? I'd think that the latest rev would have changes for some reason - hopefully a good one.

I'm using the latest 1.54 without performance issues.

[jish74]

hi all

I am using 1.54.07.00 radio, I use to get call from my gf every night for straight 3 hours. All these time my wifi is also active. Most of the days I get 40-50% of battery after I finish the call. So I think it is pretty impressive, isnt it?

Cheers
Jish

[mymegabyte]

I'm working on a way to evaluate this.. I agree with mattk_r that it will probably vary drastically by region, usage, configuration, network, etc. But at least for my case, wi-fi is almost always off and my phone is in 'sleep'/'suspend' with Flexmail email running an IDLE (PUSH) IMAP email session in the background. Just a note, the way this works, the phone still gets to sleep and anytime a packet/data is received over the GPRS/3G connection the phone is woken up in unattended mode (no backlight) so that the maill app can process the message and notification then the phone returns to sleep state. So my goal is to pseudo-scientifically figure out which radio works best for my use.

To figure that out I have written a pair of programs that simulate the IMAP IDLE connection of an email client. (Why not use the real thing? I want the experiment to be the same everytime I run it, I can't guarantee that with email and software that I don't know the intricacies of.) One half runs on the phone to simulate the phone email client, and one half runs on a server that sends periodic messages to the phone to wake it up. When the phone is waken up it sends its current estimate of the battery life remaining (as reported by Windows API) to the server for logging.

In order to run my tests, everynight I have/plan to do the following procedure.

Flash a new radio to the phone for test
Charge the battery fully
Soft-Reset phone
Run my program


And then in the morning I dump the server log and generate a nice pretty graph of battery remaining v. hours on. This has obvious deficiencies such as

The phone never actually moves, it is on my nightstand so this won't simulate an active day where the radio is having to select the best tower.
When I wake up my battery is not dead, so I am not able to measure time from total charge to total discharge.


Even with these deficiencies and possibly more, I believe that this will give a decent benchmark as to which radios perform better than others. (in terms of battery life) So far I have conducted this for 2 nights and 2 radios, both running in 2G mode. The next two nights I will probably re-run the tests for 3G enabled just to see if that causes a significant change in the result.

So see this pretty graph to see what's happened so far... I'll post updates as I progress.

http://www.mymegabyte.com/exp1t.gif (http://www.mymegabyte.com/exp1.gif)

Oh yeah, I'm on ATT/Cingular Network in USA/TX.

Results in summary:
So far, I have tested radios 1.47.30.10 and 1.54.30.10 and gotten practically identical results for battery life. In my day of use for each radio, I have not noticed any call quality issues with either radio.

Other techniques: ?
There probably are other techniques to accomplish this, such as a program that measures battery discharge current. My gut feeling is to not trust these for this analysis because those programs typically have a low sampling rate and I don't know where they get there information and if that is a reliable source. And the other problem, I haven't found any such programs that can do it when the phone decides to go into the sleep mode and radio is having to maintain an idle but yet present connection to the cellular network.

Feedback anyone? Ideas?

[efayes]

dear experts, i've flashed 1.54.07 radio rom, but i soon discovered that i've lost my HSDPA connection to network. now i can only have 3G connection. Even though i tried to enable HSDPA in Schap's Config...but still no result...

Help please...or please suggest which radio rom which has got HSDPA enabled...

p/s: i think 1.54.07 is power consumption friendly becoz it has disable HSDPA connection...

what do u guys think?

[surrept]

HSDPA is enabled in that rom. Been using it with pandora naked rom with no issues whatsoever.

[efayes]

that's weird...hmmm....I'm using Schap's 3.57a ROM...previously have HSDPA b4 i upgrade to this rom...

[ermenzegna]

2 cents on this topic - the observation of battery drain is somewhat subjective. I'd suggest someone do an extended test where the phone has a current drain logging program and track drain for each phone mode - data connection - transfer / phone use / idle and do a statistical comparison.

With a lack of good data? I'd think that the latest rev would have changes for some reason - hopefully a good one.

I'm using the latest 1.54 without performance issues.

INDEED !!!
I was go with 1.54.30... then I have a trouble to find "3G" (somethimes it was hard to find "E") then I switch back to 1.50.00... and everything is ok (I mean from the same place I live, I found "3G" successfully). The battery drain should be have relation with the connection and that's vary in other country IMHO :p

[hermes]

Still on 1.43 and seem to be doing just fine with battery life. Maybe I will try the 1.47

[efayes]

Switch to 1.50.00....HSDPA returns... :-)

So i can presume that 1.54.07 has got no HSDPA enabled for power saving...

What say experts?