yashsingh1/xdaforums huggingface dataset:
[G2 and Desire Z Q&A, Help & Troubleshooting] Poison:
I have the same issue with battery performace. I've moved to Desire Z from my old Desire which had AMOLED display. On my old one, the display taked 5-8% of battery. On Desire Z I have minimum 50%, but ussually ~70%.

After reading that some people can use their DZs like "for two days of heavy use (gaming, browsing)" or "5% for 6 hours" I can't understand how?

Comparing to old Desire my DZ have poor battery performance. But the specs tells it must be much better.

I'll publish my battery usage stats after some days. Maybe it'll be useful.
[G2 and Desire Z Q&A, Help & Troubleshooting] Poison:
In additional.

I have stock Sense ROM with root and S-Off. No overclocking kernel. My SetCPU profile is set for 245 MHz when screen is off.
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Interesting read...desire users, amoled etc. cynogen mod, 2.2 android:

http://code.google.com/p/cyanogenmod/issues/detail?id=2012

Another snippet:

http://www.goodandevo.net/2010/08/h...ry-and-possibly-double-your-battery-life.html

a variation:

http://xdaforums.com/showpost.php?p=6796078&postcount=1

i'm in similar shoes like you guys. i'll try these.

I'm using SetCPU 245MHz idle, stock Z rom.
[G2 and Desire Z Q&A, Help & Troubleshooting] steviewevie:
Very interesting, thanks for sharing :)
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
And a really "geek" method here quoted from cyanogenmod issue:
[G2 and Desire Z Q&A, Help & Troubleshooting] pizza65:
What about the flicker? Can anyone confirm that?
[G2 and Desire Z Q&A, Help & Troubleshooting] catachresistant:
I have a UK (read: QWERTY) Desire Z, first batch.

I tried reprodocuing the flicker by lowering the brightness completely and looking at a blank white page in the internet browser. Couldn't see it. Maybe I wasn't looking hard enough.

That said, I'm not getting the great battery life that most seem to be getting, and the stats always show the Display as being the number one drain. HOWEVER, it doesn't seem quite as bad as you guys are saying.

Right now, it looks like this:

Unplugged for 18 hours and 16 minutes, battery at 36%

Display accounts for 41% of the drain

It has been on for 50 minutes.

(stock ROM, running an IM client 24/7, synced to three email addresses... Typoclock seems to use 2% of the battery every time as well, which seems relatively high for such an innocuous little widget)
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Yeah. I have some slight flickering too, slight when low light set.

Uk stock.

I dont think high display percent is an issue too much reading cyanogen issue comments.if you use nothing but low cpu burden apps, display should eat most.

Also if i have it off, power is eaten by cell standby.

Im still hoping for a settled battery log mentioned in forums.
[G2 and Desire Z Q&A, Help & Troubleshooting] lordevol:
My 2 cents:

If I "use" the phone, I have to plugin it every night.

If I do not "use" it (nobody calls that day, no browsing or GPS (Just work!)), I plugin it every two day (ex. mon - wed - fri).

The display is always 65-80 % of the "drain problem".

Today the stats are:

7.30 am: full chargerd 100%

7.30 pm: display drains: 70% in 1h : 21m - battery at 20%

I leave automatic background gmail sync on (only daylight, I use the "Flight mode" overnight)

No bluetooth, no wifi, no gps, brightness 35-40%
[G2 and Desire Z Q&A, Help & Troubleshooting] harolds:
No phone either.
[G2 and Desire Z Q&A, Help & Troubleshooting] CoolinHL:
I'm on a North American Desire Z and I see the display using 70%-80% of the battery when I have the display on for approximately two hours out of the day. I keep my display quite dim too, at 20% brightness.

I'm also running everything stock. No root, no custom ROMs, no anything.
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Isnt display percentage actually the display driver cpu time eaten?its just a theoretical value isnt it, not watts gone? It seems obvious that its eating a lot as it refreshes all the time regardless of display light level.
[G2 and Desire Z Q&A, Help & Troubleshooting] ddotpatel:
My screen on is only 33% today, im sure its usually higher though. Maybe its due to me flashing stuff all day. Ill do a full charge tonight and report back Sunday.

...bought from e2save, a part of carphone warehouse.
[G2 and Desire Z Q&A, Help & Troubleshooting] lordevol:
The problem is that we can't compare the results because of the different configs/use of the phone.

Is there a software that drains the battery in a "standard" way in a few hours?

Something like the CPU performance test

Can't understand you, what do you mean?
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Well, i tried to "condition" the battery with the HTC advice for EVO and DHD: Charge full, Switch off, Wait 1H, charge full while off, Turn on 2 mins, Turn off, Wait 1H Charge full method, but i just realized it's only possible if you switch FastBoot off in Applications settings. Will try the method now knowing that...
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Couldnt accomplish this. Waiting turn-off and charging lead to green light in 5 mins. Well, anyway ill do full recharges. Currently my phone lasts for around 20-24hrs with moderate use, using a few hrs of hsdpa and some wifi for half or one hr per day.

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] jark99:
I use the battery calibration technique that alot of people do. Where you drain the phone to 0%. Charge it use it till iit drains charge it.....doing this 3 times so android knows how to callibrate itself and knows where 100% is and 0% is. I have used mine since 6 am yesterday and use it for medium browsing txting. Xda. Emails....and todays saturday and its ar 30%. Im going to drain the battery again then do full charge, it seems to make my battery last longer :)
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
I'm getting the display issue mine says 69% and on for 1 hour 20 mins, the phone has been on for 6 hours and my battery is in yellow already. My signal at home is pretty poor 100dbm 10 asu. Gonna try the evo charge calibration method now
[G2 and Desire Z Q&A, Help & Troubleshooting] jark99:
The calibration method did wonders for me. I suggest everyone try it. :)
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
Which one did you try, i am about to try the second one:-

This is a one-time only procedure.

Turn the EVO on and charge it for 8 hours.

Unplug it and turn it off.

Plug it back in and charge for 1 hour.

Unplug it and turn it on.

Wait 2 minutes and turn it off.

Plug it back in and charge for 1 hour.

Here's a variation of these instructions:

Turn the EVO on and charge it until the LED indicator turns green.

Unplug it and turn it off.

Plug it back in and charge until the LED indicator turns green.

Unplug it and turn it on.

Once powered on completely, turn it off again.

Plug it back in and charge until the LED turns green.

Unplug it, turn it on, and use it normally.
[G2 and Desire Z Q&A, Help & Troubleshooting] lordevol:
I always charge the phone to 100% when it reach o% and auto shut off.

But the battery is still poor.

Is there a software that make a 'controlled' battery (with standard cpu gps wifi and umts use) drain from 100% to 0% that let us make some serious statistics?

We do not even know if this is an issue or not
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Look back, mentions drain to 0 charge full, repeated a few times. Evo method didnt work for me, i think htc z has no problem with detecting the real level of charge, at least i could only charge it 5 mins before it turned to green in the round where you charge it turned off after waiting an hour.

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
I got reasonable battery usage after going through "accounts and sync" and switching off or setting to manual most things.

For some reason by default, even if you don't use them the following seems to happen:

Google account: constantly syncs every few minutes it seems! (poor)

HTC: set to push (very nice)

News: Hourly?

Stocks: Hourly

Weather: 3 Hourly (i do use this)

Was dropping 20% overnight (8 hours standby) until I played with it. Now getting 36 ish hours with occasional txts, Facebook app, tube app, angry birds.

I saw something in another forum that its actually better if you use Googlemail to use the mail app than sync..

May try the calibration trick though.. always worked with Windows!

Phones on charge now so can't get stats unfortunately. I've never seen display that high, cell standby is normally the highest for me.

Also, anyone get random network drops when below 5% battery?

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
With wifi or mobile net off or on?

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
Wifi off, Mobile net on. Mobile data is set to "always on" Normally 2/3 bars HSDPA / 3G

Sat here with it next to my laptop on external speakers, its certainly a lot more "chatty" on the network than my old TP2. Currently on GPRS tho..

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Thanks. Yeah i noticed that the hsdpa itself doesnt consume too much above the 3g mobile network itself. Even if i have it off overnight and standby it still eats 15 20 prcnts of juice with setcpu 245mhz idleing. Will see what happens after 2 more full discharges..

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
HSDPA in standby consumes the same as 3G, however, as soon as you fire up data, it will die quickly... VERY quickly... I'm searching to disable HSDPA and stick with 3G if you've seen anything. I used to on my TP2 and TD2 and it helped loads!

Have a look through your auto sync list and disable what you don't use, it helps a lot.

Craig

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
well, in case you find a way to disable HSDPA drop a message here too. Much interested to try that. (Especially coz in my mobile network EDGE is not enabled so grps would be too slow while 3G would suffice)
[G2 and Desire Z Q&A, Help & Troubleshooting] jark99:
I used this method just today my last 30% died at 2:20 pm. I charged it and it was fully charged by 4:32 pm. Im going to test with heavy usage and let you guys know how long it lasts. I did the charge to 100 plus little more the 2nd time and when my phone was done charging today aka right at green light, i took the plug out. Lets see how battery life is today.
[G2 and Desire Z Q&A, Help & Troubleshooting] Stealth1985:
I'm starting to feel that the auto brightness doesn't work and thus is killing the battery quickly. On my iPhone the brightness changing from light to dark was very noticeable. I haven't seen it change at all on my desire even if I cover the sensor.
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Might be an sw issue and related to the flickering described here?

Well guys last night i had a very interesting battery thing: according the syspanel this time the cell standby did NOT push up to an enormous percentage and thus charge remained all through. Decreased only 2 percents instead of the usual 15. For 7 hours 2 percents,extrapolated 300+ hrs standby, like promised. Reading the deathgrip antenna trouble thread i start to think its related to antenna failure in certain relative objects like hand, poach etc. That might be a clue...

Wifi and mobilenet was off as always.

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
I was starting to think that too, I was in a dark room last night and the brightness was full brightness, it really doesnt adjust! Anyone else recognizing this? Im on stock bell desire, no root yet!
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
what are people getting from a network signal strength perspective (dbm and asu)?
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
With gripping back, drops to -110 db 5-6 asu from -85 db 13-14 asu. The bigger part i cover of the back with my hand the worse it gets.

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
have you got a protective case on yours?
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
No, but i have tried to isolate electrically my hand. It doesnt help. I think ill stick to keep it face down anywhere i go lol to keep its signal strongest. :)

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Keeping the full recharge thing, round 3, and with the cell stanby low overnight, this day i am over 24h and 14% left. Some short calls, hours of hsdpa standby, about an hour of wifi using, newsrob, a bit o browsing. If i can keep mobile signal ok this battery life will be really ok. What i had with hero i guess....

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
Still no luck on the disable HSDPA front.

Some people suggest using the Service Menu to change the revision but I can't get into it (any help appreciated) and another method requiring root (which I can't be bothered) changing the build.prop file.

Both methods are here: http://xdaforums.com/showthread.php?t=837716

As it happens, I'm currently outside 3G / H coverage (which on O2 UK is everywhere outside a large city) and battery life is epic! dropped only 10% in about 20 hours, usual use. While I plan to try the calibration idea, I would still like to turn off HSDPA.

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] ddotpatel:
How about this http://android.modaco.com/content/a...om/308994/one-way-to-force-3g-only-in-eclair/
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
I'm afraid its not that easy.. This will disable 2G (GSM) HSDPA is also WCMDA technology so the phone will go between 3G / H only.

Thanks for the suggestion

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] ddotpatel:
Do the other options not apply then?

My bad.
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
No, they're for altering the selection parameters for GSM / WCDMA also American mobile standards :(
[G2 and Desire Z Q&A, Help & Troubleshooting] Stealth1985:
I'm on pauls custom Rom with sense. Root and s-off. Anyone else notice a lack of screen dimming?
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
After hours of research, I can't get into the Service Menu on my Desire Z.

http://xdaforums.com/showthread.php?t=838388&highlight=HSDPA is the Method to disable it by editing the build.prop from the G2 forum, just set category to 0 (UTMS r99) to disable HSxPA.

It says it requires perm root and probably S-Off??

If battery life continues to be quite poor in 3G / H areas, I'll prob give up and try it.

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Phone face down (antenna up always for best signal), only 3g mobile voice on, mobile net off/wifi off, after full recharge, being 100% after 12 hours after disconnecting charger and talking 2 minutes. Also using setCPU 245mhz idle. My culprit seemed to be the poor signal when phone antenna (on the back) covered with hand/thick furniture. I cant yet extrapolate standby time, but i see this is gonna be as EPIC as craiglay had with gsm/gprs.

Next recharge, I'll try this with HSDPA network always on.
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
18:27minutes in use, 96% with 3g voice only. Good, eh? about 4-5 minutes of talk, a few sms (cpu at 245mhz). :) That means 18hours x 25 standby time?? :D Well depending on signal quality its enormous. Sorry for spamming here, maybe interesting for some. More interesting will be the test with constantly being on HSDPA mobilenet and taking care that the phone antenna NOT be covered while sitting on desk/bed in standby.
[G2 and Desire Z Q&A, Help & Troubleshooting] zuachs:
Hi, have anyone tried current widget to measure the power consumption in ma ?

I'm getting 28-30ma in standby in my DZ with stock Euro Rom....I don't know if it's normal for this phone.

I got 4-9ma in standby in my previous phone (HTC HD2) with froyo running from the SD Card...I have the same sync configuration I used to have in the HD2 but the current draw is higher in the DZ in standby... :/
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Here it counts 36 in standby.

-- sent from htc z using xda app
[G2 and Desire Z Q&A, Help & Troubleshooting] zuachs:
Thanks, As I can see it's around 30ma in standby...
[G2 and Desire Z Q&A, Help & Troubleshooting] andrewilley:
I'm getting around 28-30mA in standby too. That's with Wi-Fi on. When I turn it off, it doesn't change any to be honest, which quite surpised me.

Andre
[G2 and Desire Z Q&A, Help & Troubleshooting] steviewevie:
That makes me wonder if it's reporting correctly on our phones.
[G2 and Desire Z Q&A, Help & Troubleshooting] zuachs:
The same here, it doesn't change if it's on or not...it's weird... :/
[G2 and Desire Z Q&A, Help & Troubleshooting] zuachs:
I've sent an email to the developer to check if this phone is sopported because I saw in the recent changes the HTC Desire HD is supported but this one is not there.
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
Seems like this is signal strength related just hoping that a new radio Rom will be released soon as the signal strength Is poor
[G2 and Desire Z Q&A, Help & Troubleshooting] gtrab:
neat little widget

I'm getting 28-30 mA in stand by too

(I'm overclocked to 1.4GHz :D)
[G2 and Desire Z Q&A, Help & Troubleshooting] superspacey:
i've found that using the app "juice defender" works at increasing my battery life a fair bit.

all it does is disable your data and turn it on for 1 min every 15 mins or so while your phone is idling/standby. but when its actually in use, your data is on.
[G2 and Desire Z Q&A, Help & Troubleshooting] D3LTA9:
Battery life is my only real complaint with my desire z, that and so far I cant figure out how to set a custom sms notification tone.

Like others at first I thought it was dying so quickly just because I didnt stop playing with it. But now I am unsure, I will be lucky to get a full day out of a charge which seems awful to me. Normally I will have auto brightness and wifi/mobile data always on (mobile data not used much as normally have wifi where ever I am), will send only a few sms's, maybe voice call and then some general fiddling and maybe some angry birds and a few facebook updates and weather checks etc. No over clock but have root and s-off, oc kernel seemed to make it even worse and killed my bluetooth so back to stock atm.

Going to change from auto brightness as it always seems to have it cranked up high and also try turning on airplane mode over night and wifi/mobile data only when I need to use it and see if I cant stretch to 2 days for a charge.

Also grabbed that current widget and running it now, nice little widget btw, like you guys 28-29mA on standby, also getting 153mA when operating but doesnt seem to change with wifi on or off?
[G2 and Desire Z Q&A, Help & Troubleshooting] JPHCCFC:
I reckon there is also a bug within the auto brightness as it doesnt auto adjust. I had my phone on last night rarely used it and from a full charge got about 15hours battery life. 5his is with hardly any use! The display accounted for 65% of the battery use! Im just about to complete my 3rd cycle of letting the battery completely die and then a full recharge to calibrate the battery but im not holding up much hope for.a longer battery life. I just think the network strength and the screen bug is the issue and hopefully a software fix or rom release could easily resolve that
[G2 and Desire Z Q&A, Help & Troubleshooting] andrewilley:
Inside Messages:

Menu > Settings > Notification Sound

You'll need to make sure your new MP3/etc files are somewhere that the system can see them - I used /sdcard/media/audio/notifications/ but I'm sure there must be an 'official' place for them.

Andre
[G2 and Desire Z Q&A, Help & Troubleshooting] craiglay:
Hi D3LTA9,

Could I trouble you to try something as you're suffering from battery life and you've rooted / S-OFF your phone. Assuming you're in a 3G / HSDPA area of course!

http://xdaforums.com/showthread.php?t=838388 is a method used to enable advanced HSDPA on the G2.. If you set "ro.ril.hsxpa" to 0 (UTMS r99) it disables HSDPA but keeps on 3G. I used to do this with my Touch Pro 2 and got better battery life as a result. I get much better battery life when i'm out of 3G / H coverage on my Desire Z but haven't as yet got round to rooting / S-OFF to try it..

Thanks

Craig
[G2 and Desire Z Q&A, Help & Troubleshooting] D3LTA9:
Sure Craig I will give it a go when I get a spare min today.
[G2 and Desire Z Q&A, Help & Troubleshooting] D3LTA9:
Thanks for that Andre but even with the notification mp3 file in that folder it still wont let me select in when I change my message notification tone, can only select the HTC ones or get more from HTC online. Just read the manual and it also says you cannot select your own custom notification tones, only ring tones.

Pretty lame if thats the case, cant remember the last time I had a phone that you couldnt set your own txt sound...
[G2 and Desire Z Q&A, Help & Troubleshooting] NXUS:
As most people keep stating here, i have the desire z and the display takes up a considerable amount of my battery. With light, use some wifi , my display is taking up a whopping 88% even though i have my brightness down to the lowest limit. Display has never dropped below 75% and other processes take up a max of 6% of my battery. Something is wrong with the way the phone handles the display drivers or something?
[G2 and Desire Z Q&A, Help & Troubleshooting] kiddyl:
I've replaced my battery after 3 days with a Touch Pro2 battery which I had to cut to fit, but I can easily get a full day from it. Data is always on and as soon as I get home I turn on WiFi and it needs to be recharged between 23:00-24:00. Phone gets of the charger at 7:30 and happy to use the phone a full day now. Can't really comment on the original battery, but I am certain I couldn't get a full day out of it.

The battery was rated 2200mAh, but that should be more in the range of 1800mAh.
[G2 and Desire Z Q&A, Help & Troubleshooting] gtrab:
You really CUT the battery ?? Wat did you use ?? A MAC Air ?? :D :p

PS: nice to see ya around TheDeadCPU

Also sent with a HW keyboard using xda app from my 1.4GHz Godspeed DZ
[G2 and Desire Z Q&A, Help & Troubleshooting] kiddyl:
I had to cut 2 plastic tabs that prevented the battery to be put in. It is just the plastic casing. So far I am glad with the phone and overall battery use.
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Is this a battery thats sold here and there with a replacement cover too or a slimmer version that fitted the HTC Touch Diamond 2 WITHOUT replacement cover? Im thinking about ordering one and try it but those with replacement cover seem to thick for me even if cut.

Like this here:
[G2 and Desire Z Q&A, Help & Troubleshooting] kiddyl:
You should get one that will fit without replacement cover or it will stick out as there are at this moment no replacement covers yet for the Desire Z.
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Can I do this with Temp Root? or i need rebooting, thus perm root?
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
Tried this, with busybox reboot and without, neither way worked with temproot. (Using gscript lite to run it with su)

and when tried with 'busybox killall', build.prop gets written back with '=2' version.

Without 'busybox killall', only reconnecting to mobile network remains hsdpa.

Guess you need to rebuild something? Or with permroot the build.prop remains '=0'...
[G2 and Desire Z Q&A, Help & Troubleshooting] tbalden:
So you say that there are such Batteries for htc diamond 2 with 2200mah that DOES NOT need new cover for HTC diamond 2? I only could find 2200mahs that shipped for htc diamond2 with a replacement cover to fit. Couldn't find one that fit to htc diamond 2 without replacement cover.