yashsingh1/xdaforums huggingface dataset:
[Hero, G2 Touch Android Development] odin13:
hi,

thnx for the great tip !!!

when i first checked the setting my phone was set to WCDMA and i changed it back to GSM auto (PRL)

now .. it might just be a placebo effect or some like that .. but .. what the hell ?!?!? .. this really works i believe

i charged my phone fully at around 18:00..

when i left work i used the phone for like an hour on the train.. browsing and sending textmessages..

at home i fiddled around a bit .. rebooted the phone twice

and still the battery is at 95% !!!!!!!

WOW :D

btw. i use VillainRom 5.3
[Hero, G2 Touch Android Development] eldrid:
@badass

EXCELLENT find mate, even i use villian 5.3 and it was set to wcdma, i switched to only GSM since i use only 2g internet and GSM and the battery life has improved considerably its been 10 hours and i have lost only 4% battery, normally i would lose 20-30% by now assuming the usage was the same.
[Hero, G2 Touch Android Development] Nemo0815:
Mine 2.1 ROM (Raidroid) was already set to GSM only, because i set this in the normal phone's properties. This is the same setting as is already available from the normal settings menu, nothing new at all.
[Hero, G2 Touch Android Development] daverl:
It's maybe coincidence, but this has made a MASSIVE difference to my battery life.

Using Vanillan ROM 5.3

Prior to changing this setting I was running out of battery after about 6 hours of light usage. Phone lost 40% charge overnight.

Changed this setting last night. It was at wcdma, now at GSM Auto PRL.

Moderate usage, bit of GPS use, internet surfing, couple of phone calls, texts, and the phone battery is still more than half full.

and GPRS, 3G and HDSPA all working.
[Hero, G2 Touch Android Development] btdag:
O i misinterpreted what this did. I'm testing now, though I have good battery life I will never say no to better.
[Hero, G2 Touch Android Development] HomerSp:
I remember that there used to be an option for this in the Settings, but now I can't find it anymore. Do you know where it is?
[Hero, G2 Touch Android Development] Bad4ss:
Have you tried GSM auto (PRL)? You might get the same benefits that other people are getting but without losing the high speed data connections. You can't set that in the normal settings, nor the other stuff like WCDMA and the like.
[Hero, G2 Touch Android Development] Bad4ss:
Thanks mate, I'm glad I found it too, my battery was draining faster than a black hole draining the matter surrounding it. (Rubbish analogy I know, but what the heck.)
[Hero, G2 Touch Android Development] rustynuts34:
am i right in thinking this turns of 3g but i can still get G and H as im on t mobile and 3g doesnt work anyway it never d/loads using 3g and if im in the middle of a call and it trys to use 3g my call gets disconnected and i cant call again unless mobile data is switched off
[Hero, G2 Touch Android Development] Bad4ss:
Try it, while using gsm auto (prl) i haven't seen 3g symbol, only H symbol.
[Hero, G2 Touch Android Development] rustynuts34:
have changed it already only getting g so far but signals not great around here might make my phone a lot better without 3g as it plays up so much when 3g is showing, hopefully all will be good thanks. Will let you know how it goes out and about tommorow:D
[Hero, G2 Touch Android Development] flywithme:
This look promising, gonna give it a try =)
[Hero, G2 Touch Android Development] CitizenLee:
I'm starting to think that this has little to no effect on my phone... other than loosing 3G.

Phone stopped charging at 5am... and I now have 70% battery (9am). Apart from alarms going off to wake me up it's just sat idle the whole time.

What's the default setting again as I might revert back for a few days and see how it goes.
[Hero, G2 Touch Android Development] anarchyuk:
well the fact you dont have a clue what you are going on about and what the options really do and your claiming a battery fix for 2.1 when it is a kernel issue and nothing to do with the network. How can it be a fix when you have to substitue high speed data?

useless complete useless.

People should be turning 3g off when they want to save battery on every rom, thats why the market has 2g/3g switch widgets, all im saying is dont start sending people off into random fixes when all you are doing is masking the use 2g only networks setting in the settings list with a service code...
[Hero, G2 Touch Android Development] genich1971:
made the change yesterday evening. charged the phone till 7 am. int the last 4.5 hours lost only 7% of the power, insted of about 25% before the settings(in the same amount of time and the same use).

my conclusion is that it works! and save some of the power (for me seems to be a lot of the power).

thanks for the tip.
[Hero, G2 Touch Android Development] Deeko1:
Doesn't seem to make the slightest bit of difference to the battery life on my Hero...

It was on WCMDA preferred and I changed to GSM Auto. GSM Only (2G) is kind of pointless for me!
[Hero, G2 Touch Android Development] Bad4ss:
Maybe it works different for people with different service providers who have different signal types. only a theory though. But it is working for a lot of others
[Hero, G2 Touch Android Development] kieranc:
FFS it's not 2G only!

I suspect there's some diffferences between networks/countries, I don't think we get 3G in the UK, only HDSPA and I think this switch tells it to pretty much use HDSPA only. Maybe if you're in an area where it's regularly switching between 3G and HDSPA you'll get longer battery life with this? It certainly seems to help my battery life!

Maybe the phone always looks for a 3G signal even when there isn't one available, before it drops onto HDSPA. I noticed mine had a 3g symbol up a lot even though there are no 3G networks. Maybe this just stops it doing that? Maybe I'm talking crap! Who knows?!
[Hero, G2 Touch Android Development] anarchyuk:
Read some wikis or something, a node b mast is 3g, a HSXPA mast is a 3g mast that has been upgraded to support 3.5g transmission. Hundreds of UK providers cell sites are still 3g only due to the cost of upgrade to low populated areas.

People need to be aware of certain aspects of what they are doing before they start telling people to put a phone in GSM mode through a service menu to fix a battery issue when all this is doing is slowing the phone's internet down and not fixing the problme that is OS related.

Even the option to use 2g networks in the androids settings and network menu has the words "saves battery" wrote under Use only 2G networks option.

This should be an information post in general or Q&A section.. you actually are another example of the blind leading the blind with your "FFS its not 2G only" then going on to say "I suspect and follow" and followed that on with total wrong information about the uk's 3G implementation.
[Hero, G2 Touch Android Development] rustynuts34:
Just an update phone has been on for 5 hours now made two calls done some browsing used Google nav made a few calls and the usual social updates its used 10% of the battery so far today, what I am finding is normally where I'm working the phone hangs on 3g thus not giving me internet through t mobile but today its switching straight to H not sure if its coincidence but seems to be better today. Will keeping an eye on it throughout the day
[Hero, G2 Touch Android Development] Deeko1:
Yeah - could be! It may also have to do with where you are in relation to specific masts for any period of time. That would mean some people would get improved battery time just based on their location.

I also reckon my work building causes poor signal strength due to the construction. In some rooms there is no reception at all and the constant switching is probably giving the battery a kicking...

I dunno if I should chnage mine back to WCDMA Preferred or not. Anyone know what it's set to on the stock 1.5 ROM?
[Hero, G2 Touch Android Development] Deeko1:
And - GSM/GPRS only! Only the populated areas of Scotland get any form of 3G signal.

kieranc - you need to read up on this stuff - HSDPA is an enhancement to UMTS (base 3g) to allow higher speeds. Only some of the masts in Edinburgh are at this level so you get 'H' access in some places and '3G' in others. If I go outside town I'll get connected to an old GSM mast and only get GPRS.

I reckon GSM only will only allow access to the 2G masts in the vicinity...
[Hero, G2 Touch Android Development] ashes:
Current Report

My report

UP TIME - 27h

Awake Time - 02h47m

Battery level: 13%

Cell Standby: 42%

Phone Idle: 44%

Voice Calls: 5%

Dialer: 3%

Bluetooth: 2%

Wifi: 2%

Display: 2%

Full carghed yesterday: 3/4 calls (2 mins calls), 2 hours of blueetooh, 60 mins of wifi, no GPS

It ONLY lasts 30h. Something is not working fine.

Maybe some application is draining the battery (running sensevillain 5.4)
[Hero, G2 Touch Android Development] Bad4ss:
Don't know it I sense a hint of sarcasm in your writing, did you use any of the settings? or is this under your unchanged settings? I only say that because those results are a lot better than what I was getting BEFORE I changed the settings using the test menu.

.
[Hero, G2 Touch Android Development] ashes:
Not my intention to transmit any sarcasm :)

I've already known the "secret" menu. I've changed the preferred network type to GSM auto(PRL), and my perception is that it is consuming more battery.

I'll charge the phone in 2 hours, and then I'll rollback to WCDMA preferred to see how the battery will stand. But, again, i think that there's some application/running service that is consuming more battery than usual, and that I'll be the next test. Consuming 100% of battery in ~32 hours seems a lot for the type of usage that i've made.
[Hero, G2 Touch Android Development] Bad4ss:
Wow, that is still a lot LOT more than what I was getting before this change - I would have had to have charged twice in that period of time before. Maybe your provider is using a different system of broadcast/signal? - mine is T-Mobile in the UK.
[Hero, G2 Touch Android Development] latiszm:
The problem isnt this, the problem with 2.1 roms is that we dont have any HTC kernel for it. The CPU scaling does not work.
[Hero, G2 Touch Android Development] btdag:
Looks fine to me - you had <3 hours of awake time, most of which was spent on the phone, whilst using bluetooth headset and connected to a wifi network - that's pretty heavy on the battery.

Please note that your mobile network useage is not shown as a percentage - suggesting you actually spent very little time with 3G or anything else enabled... so you probably though it was worse because you wern't using it but using WiFi instead...

Also found this!
[Hero, G2 Touch Android Development] CitizenLee:
We get 3G and HSDPA here in Aberdeen, so I'm rolling back later.

On 1.5 ROMs I would average about the same, but that's after a fair bit of usage throughout the day. However, with 2.1 ROMs, even after this "fix", the consumption appears to be much higher... despite me using the phone less over the past few days than I normally would. I also can't live with G speeds... painfully slow.

To be honest, I might just revert to a 1.5 ROM for the time being.
[Hero, G2 Touch Android Development] immya:
so far seems to work for me

this morning full charge at 11am

4.30 pm -19% left

5pm put on charge

5.40 pm battery at 58% charge

i now changed from wcdma preferred to gsm auto

its now 8.09 pm and battery is at 52%

total lost before...80% in 5.5 hours

total lost after ...6% in 2 hours

you do the math

also... ill update tomorrow after a full days testing
[Hero, G2 Touch Android Development] rustynuts34:
Well it is now 9.44 and I still have 48% battery left never has this been so high at the end of the day so something is working for me ; )
[Hero, G2 Touch Android Development] kieranc:
that's great, however i never see my phone use 3g, it sits with the indicator on 3g when it's idle but never passes any traffic over it. if it onyl works in hdspa mode and this makes it use hdspa first without trying 3g, surely that's better. either way, it's my decision, it seems to work and doesn't slow down my internet access, it's all good.

so are you implying it does limit you to gsm/2g speed only? cos you're wrong... how about you fix just the underlying issues and save us all this hassle?

if people only posted on here what they knew to be fact it'd be very quiet.

how does stuff get fixed? by speculation, trial and improvement. maybe we should just do nothing instead? sit and wait for the android gods to provide a working 2.1, twiddle our thumbs in the mean time.
[Hero, G2 Touch Android Development] Bad4ss:
Hear! Hear!
[Hero, G2 Touch Android Development] havocnl:
People please read into the techniques before setting anything using this "hack"

WCDMA is the base technique used for UMTS (and HSDPA which is a derivative of UMTS) and thereby all 3G traffic (at least here in the Netherlands)

But for the sake of trying i tried then anyway. I have tried the setting of GSM Auto, GSM/CDMA Auto and GSM Only. With all these setting my 3G and H connection would not engage. Activating some internet activity also did not activate any 3G connection. There are more then enough 3.5G poles in the vicinity here.

Sorry but this only makes the phone less usefull here... reverting back to WCDMA Preferred
[Hero, G2 Touch Android Development] kieranc:
so it probably only works in certain countries/networks - people still have nothing to lose by trying it and can easily revert to their previous settings.
[Hero, G2 Touch Android Development] BlueHawk:
I get the HDSPA and 3G symbols come up with the GSM Auto selection. Battery seems to last a bit longer. But I already get over 50 hours on a charge, unmodified (VillainROM 5.4). YMMV.

There's a lot to be said for experimental work. :D Otherwise, to paraphrase Dilbert, we'd still be in caves, debating whether rocks were edible.
[Hero, G2 Touch Android Development] eben80:
This is my setting and what I get:

Battery use improved? I think so....
[Hero, G2 Touch Android Development] Deeko1:
Have any of you ever noticed that if you do a partial charge i.e. not to 100% then any battery usage after that seems to decrease for a while (i.e. you get a flat line in Battery Graph) before it starts to plummet again? I wonder if a logcat would show up why this is if you could disable USB charging?
[Hero, G2 Touch Android Development] havocnl:
CRAP!!!

After trying these settings i have been unable to send any text messages...

Have reset to WCDMA Preferred, reflashed radio ROM, reflashed ROM

but stil.... get error when sending SMS messages!

What the hell is up here????
[Hero, G2 Touch Android Development] iRobert:
just tried it and i can send text msgs :-P

i had another prob: try turning off mobile sync, then go into flight mode, go into normal mode again and enable mobile sync again.

now everything works so far :-D

bb and thx!
[Hero, G2 Touch Android Development] anarchyuk:
in the same menu re enter your smsc number, i.e t-mobiles text messaging service number and press update!
[Hero, G2 Touch Android Development] Zebwen:
This has worked 100% for me, my battery life has increased dramatically (and I quite literally use my phone ALL day).

You, sir, are a genius :)
[Hero, G2 Touch Android Development] Bad4ss:
Thanks dude.
[Hero, G2 Touch Android Development] eldrid:
hey guys i dont know if its only me but my battery doesn't last me a day, by night my phone shuts its self down due to low battery. i had tried this solution With villian 5.3 and it used to last me 4 days, now i have flashed 5.4 over 5.3 without a wipe and my battery drains really fast. some one please peovide me the link to 5.3 as i have deleted it.
[Hero, G2 Touch Android Development] shotgunfool:
Massivly improved battery life, my latest stats have been amazing.

32 hours since last charge

5 Hours awake time

40% battery left.

Win ;)

Villain 5.4 FYI
[Hero, G2 Touch Android Development] havocnl:
Re: [SOLVED] ALL 2.1 ROM Battery Life Problem Fix... (with test results)

thanx! worked like a charm!

must have pressed update with an empty field when I was looking around

Sent from my Hero using the XDA mobile application powered by Tapatalk
[Hero, G2 Touch Android Development] 160bpm:
IT IS WORKING!!!

GPS (auto) ... when i doing nothing my phone have a very long battery time...

everything is working....

Also did overclock when screen off setting 245760 (max and min)
[Hero, G2 Touch Android Development] Bad4ss:
Have you checked whether Villain 5.4 hasn't changed your phone away from GSM auto (PRL)? If it has, just change it back - if it hasn't and it is a problem with version 5.4, then I'm sure someone will have a copy of 5.3 they can upload, I think I may have a copy at home, so if you don't find it I may be able to upload it at the weekend.

Also, have you got a nandroid backup of your 5.3 system?
[Hero, G2 Touch Android Development] Bad4ss:
That is amazing, and it is so much better than even I got, looks like I'm gonna have to get back to Villain, as all my tests were done on a different rom as I've been trying it out for a few days.
[Hero, G2 Touch Android Development] hennymugge:
This sounds almost too good to be true!!!

Will report back at the end of the day!:)

Running Villain 5.4.4
[Hero, G2 Touch Android Development] inchia:
Hi all guiz after a quick googleing and having some knowhow about networks i give you my comment, i hope this will be usefull.

Terminology:

W-CDMA (Wideband Code Division Multiple Access) is a 3G network present only in USA Jappan and Corea. All other can evade to use this.

PRL: Preferred Roaming List (PRL) as you can imagin is the list of operator to use for roming if your 3G network is not reacheble.

In general the 3gNetwork in europe are on GSM and not on W-CDMA (or better they use W-CDMA protocoll over GSM network to reach the 3g speed). But in any case if your operator/your state don't use W-CDMA it is usless and can drain more batteryto leave setting as W-CDMA it is better to jump to GSM or whatever your network is.

If you do data roaming you NEED to leave PRL, if you don't need or (as me)don't wont roaming in any condition you can leave settings without PRL.

Teorically if you enable GMS you are supposed to have even CDMA (Code Division Multiple Access) that is a standard used on many 3g network.

In any case i suggest to give your feedback abou the different configuration verifying even the functionality working or not.

Please in the feedback i suggest to indicate the state where you use the Phone.

I use phone in Italy (we use only 3G GMS networks), i don't use 3g data, but i use roaming when i'm out of italy for work, at the moment i'll test GSM (PRL) ansd i'll let you know if i'll have problem when i'll travell to USA.
[Hero, G2 Touch Android Development] havocnl:
wrong...

a lot of european networks use w-cdma, since most networks are based on UMTS (HSDPA is also a UMTS sort)
[Hero, G2 Touch Android Development] inchia:
As far as i know the w-cdma used in europe is over GSM but i can be wrong, if i'm wrong i'm really sorry for the wrong information, in any case i'm testing GSM PLS at the moment and i'll let you all know about the result i'll get.

Unfortunately i have no FLAT connection so i'll not be able to give you info on internet connection, but only on battery life.

Thanks for the clarification!
[Hero, G2 Touch Android Development] foxmeister:
Here's a quote from http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System.

W-CDMA is part of the UMTS standard, and this is typically deployed by GSM networks for 3G support.

Essentially when we refer to 3G in Europe, we're really talking support of GSM/UMTS standards.

Note that whilst W-CDMA is very closely related technology wise to CDMA (Think Verizon or Sprint in the US), there are no "CDMA" networks in Europe which is what the OP originally alluded to.

Regards,

Dave
[Hero, G2 Touch Android Development] zizoom:
I'm in France and I tested GSM only (PRL) and I still have a connexion to HSPDA, seems to be quicker actualy !

I guess that there is a progressive behaviour depending on what you have selected.

I mean if you select WCDMA only, maybe it attempts to find a true WCDMA connexion, then reverting to GSM connexion and then finaly finidng HSDPA trhu GSM if available ...

Puting it on GSM Only skips the first test (WCDMA one) and this for each connexion ... could be a logical reason for less battery drain I guess.

Or I may totaly wrong, but that doesn't seem stupid to me :)
[Hero, G2 Touch Android Development] inchia:
Done some more test and:

changing the menu to GSM only is exactly the same as setting "only 2G network" in normal phone preferences.

Considering GSM PLS only change roming preferences the effect should be the same as setting only 2G.

So the conclusion is that it will save battery, but will let you go only over 2gnetwork (SLOWER).

At this point avery of you can chose what to do i don't use data connection and i'll go to 2G only, but if you use internet connection can be better to stay as 3g (standard w-cdma prefered setting).
[Hero, G2 Touch Android Development] Bad4ss:
I think you are wrong. I don't think you read the whole of 1st post. you do get high speed data (hsdpa in. my case, which is faster than 3g) with GSM auto (PRL) - it is NOT the same as GSM only. read the info from other peoples tests. I am currently on the GSM auto PRL and I am getting high speed data right now. also read the other comments that are even on this page.
[Hero, G2 Touch Android Development] inchia:
I have seen them, but seems really strange, in any case for my situation (i don't use internet connection apart for wireless) only GPS is really good, i'll test the battery life time...
[Hero, G2 Touch Android Development] shokuhawan:
I'm using GSM. Still got 3G and 2G connection! Don't know why, I haven't test on GSM Auto(PRL)
[Hero, G2 Touch Android Development] Bad4ss:
Wow that's so cool. Maybe I have to change some APN's when I move onto GSM only - what rom are you on and what's your battery life like? and I'll investigate.
[Hero, G2 Touch Android Development] goldencore:
This IS working for me. Almost doubled the time I can use the phone. My data rate ist as fast as it was before!
[Hero, G2 Touch Android Development] shokuhawan:
Hero with Villian GSM 5.4 Rom. After changing value and reboot, I still got 3G connection.

Magic: Smoki 2.x.x. GSM (Not test) Fully Charged at 10pm, send few sms. now 2Am, still 100%. Wait for result tomorrow :)

I'm from VietNam. Using Vinaphone Network
[Hero, G2 Touch Android Development] mystaka:
I would say percentage drain is not as accurate as some imagine.

My phone battery somehow stuck 100% level and at around 60% level longer than any other percentage.

And it drops from 90% to 80%, and from 15% to 5% in a matter of minutes.
[Hero, G2 Touch Android Development] hilwood:
thx for sharing~ great if it's really work;)
[Hero, G2 Touch Android Development] rustynuts34:
Turned on phone fully charged at 7am

9.50pm now and 8% battery left

android system 72%

cell standby 10%

phone idle 8%

voice calls 4%

Wifi 3%

display 3%

not sure what it all means but its nearly time for a recharge
[Hero, G2 Touch Android Development] 160bpm:
Yesterday 8hour in morning disconnect from charger. 22hours later connect again to charger because the battery is empty...

before the fix i must add the phone on the charger again after 8 or 9 hours.
[Hero, G2 Touch Android Development] petsasj:
I can relate to that. For example, phone can stay at 100% for an hour, then drop from 99 to 85% in matters of 20 minutes.

Turned into GSM only now, see how that works out.

Yesterday though, from a full charge, phone lasted (before shutting down , aka 100 to 0%) about 18 hours - which seems to be the longest i had so far.