Database Users

Comparison between G2 and HD2 power hunger, strange result.

I did a comparison today between my two phones both running Android Gingerbread (GingerVillain on G2 and CM7 Nightly on HD2).
As I suspected the G2 needs/takes more power than the HD2. Strange!
Can someone explain why the G2 takes much more power than my HD2?
This is how I set things up:
Both on Gingerbread (as mentioned above), with Conservative govenor set to exactly the same.
HTC Vision G2 set to 245-806 MHz in SetCPU and HTC HD2 set to 245-960 MHz in SetCPU.
I have exact the same apps installed on both phones.
I have used the same version of Battery Monitor Widget on both phones for measuring the power.
Test 1:
HTC HD2 with 3G active, HTC Vision G2 without SIM-card, both with WLAN active, Bluetooth inactive, Sync off, Screen off.
Measured values (mA)
Time: / G2: / HD2:
14:52 / -35 / -8
14:53 / -35 / -8
14:54 / -38 / -38
14:55 / -38 / -20
14:56 / -35 / -72
14:57 / -35 / -13
14:58 / -38 / -67
Average: -36,3 / -32,3
Diff: 11%
Test 2:
Both phones in Airplane mode, Screen off.
Measured values (mA)
Time: / G2: / HD2:
15:21 / -43 / -6
15:22 / -42 / -8
15:23 / -42 / -8
15:24 / -42 / -9
15:25 / -42 / -9
15:26 / -42 / -64
15:27 / -42 / -35
Average: -42,1 / -19,9
Diff: 53%
Conclusion:
Under almost exact the same preferences the G2 needs 11-53% more power than the HD2. And the G2 doesn't even have a SIM card in it, also it's clocked lower than the HD2??
Today I also tried near stock FroYo ROMS and CM 6.1 ROMS on the G2 with approximately the same power hunger.
There must be a way to make the G2 take less power?
Does your G2's take as much power as mine? I'd be very happy for examples of other ROMs/settings to make the G2 last longer on battery. It should easily outlast my HD2 I think.

ill write you a little tutorial if you like ?
i am using stock but i have changed loads of settings to make it last 30hours
thats with around 30mins of calls
20 texts
30 mins of gaming (NOVA)
30 mins of xda viewing
sent 3 emails
facebook for 10 mins
internet for 30 mins
and listening to music
if you want me to then just reply or send me a personal message

Yeah the G2 last a whole lot longer than the HD2 in battery. Its also more powerful too.
Sent from my HTC Vision using XDA Premium App

I am not an expert, so don't know how can i post the stats posted here, but I can say that from the behavior of my G2, I have a feeling that my battery doesn't last longer than 9-10 hours in total.
I have an iPhone4 and G2, both are fully charged at the same time, I have to charge my G2 twice when iPhone is still at 25%.
I know they both are different and uses different resources but still, I can easily get a day off iPhone but G2 will require atleast a couple of charges per day.
Still... I love my G2 more than any other phones I have used in past...

Is it possible for you to post that battery use chart? That would tell us a little more about how you use it. I'm easily getting a full day on my G2 with like 40 percent remaining.
Sent from my HTC Vision using XDA App

i've been very happily surprised at the battery (stock) of my g2. I can currently easily get 30-40 hours of use out of it, on EDGE. 3G/hspa = 28-30. wifi, i dunno, i never use wifi that much. bluetooth ? that's a 30 second at a time thing.
I'm using #6 of cyanogenmod's nightly builds. screen set to automagic.
maybe your battery is junk ? it happens.

I am at 15% at 12 hours at the most, sometimes 10 hours. But I probably have 30-60 mins of voice, wifi on always, 60 mins of browsing, 30 mins email, 30 mins games, 15 mins Facebook
If I start using Maps of GPS though forget it, dead in 5 hours...but same with any phone I had including the HD2 before this.
My iPhone lasted longer but I hated it so didn't use it much!

Vandam500 said:
Yeah the G2 last a whole lot longer than the HD2 in battery. Its also more powerful too.
Click to expand...
Click to collapse
No, it doesn't. I can barely get 9 hours usage out of my G2.

i to noticed that the battery doesn't last long. is it just me or does it take forever to charge?
I still love it though

has anyone tried the HTC evo trick
i have and it actually works
turn the phone on and charge for 8 hours (overnight i did)
unplug and turn phone off
with the phone turned off plug the charger in and charge it for 1 hour (clockworkmod may start up... just leave it on)
unplug and turn the phone on
leave it for 10 mins
turn it off
with the phone turned off plug the charger in and charge it for another hour
unplug the charger and turn the phone on
it might work.. mine certainly stays at 100% for ages before moving down

after reading up for the past few weeks on here and rooting then getting the proper rom/radio/kernel and setting right my G2's battery is not an issue at all for me.
I also noticed it definitely improved as it cycled it when I first got it a few times.

deffo, i agree... after about a weeks use the battery life improves dramatically

One other thing to consider is the strength of the cell signal where you. Despite all the power-saving tricks in the world, if I am at work where the 3G signal is crap (-103 dBm) and the phone is constantly flicking back and forth between 2G & 3G, then my battery life is just horrible. I struggle to make it through my 12hr shift (unless I keep it on 2G, and switch 3G on when I need it).
Whereas at home, connected to wifi all the time and my 3G signal is something like -85 dBm, I can easily get through 24hrs usually.
The one thing I've hated about Android since my G1 is having to micro-manage stupid things like 2G/3G, screen brightness, etc. I wish I could just leave my phone to sort all that stuff out itself without worrying about my battery, like I did with my old Nokia N73 (admittedly, that phone was horrible in so many other ways compared). With my G1 I resorted to carrying a spare battery around, and that is just a joke.
As for the original question "Why does the G2 use more power than the HD2" - who knows? If all else identical except the CPU/hardware then I guess that is the only explanation.

creativedevil said:
I am not an expert, so don't know how can i post the stats posted here, but I can say that from the behavior of my G2, I have a feeling that my battery doesn't last longer than 9-10 hours in total.
I have an iPhone4 and G2, both are fully charged at the same time, I have to charge my G2 twice when iPhone is still at 25%.
I know they both are different and uses different resources but still, I can easily get a day off iPhone but G2 will require atleast a couple of charges per day.
Still... I love my G2 more than any other phones I have used in past...
Click to expand...
Click to collapse
Lol the iphone are built to last for a long time because their ios. While android os takes up more energy
Sent from my HTC Vision using XDA App

Battery test

well i decided to give my phone a break and left it on minimum usage for almost 4 days now, other than some calls here and there, a bout of angry birds and checking mail via gprs and wifi.
after 4 days battery level is at 51%, (using battery indicator pro) and this is quite impressive considering my minimum usage and now am wondering how long it will go. 8days? maybe?
this is on stock JPY...no root or lag fixes.

Interesting,
Battery Standard battery, Li-Ion 1500 mAh
Stand-by Up to 750 h (2G) / Up to 576 h (3G)
Talk time Up to 13 h 30 min (2G) / Up to 6 h 30 min (3G)
thats the offical line in the specs

flamin_ICE said:
well i decided to give my phone a break and left it on minimum usage for almost 4 days now, other than some calls here and there, a bout of angry birds and checking mail via gprs and wifi.
after 4 days battery level is at 51%, (using battery indicator pro) and this is quite impressive considering my minimum usage and now am wondering how long it will go. 8days? maybe?
this is on stock JPY...no root or lag fixes.
Click to expand...
Click to collapse
Hehe, I didn't do reallife tests, but assume without usage you can make over 20 days I used to have my phone on standby for about 30h, data,wifi off, 2G only,and lost 4%, that extrapolates to about 30days on standby?
Swyped from another GALAXY

Wifi speed drops to 1mbps after a period of time

Does anyone have the issue where if their nexus has been on for a period of time the wifi performance becomes pathetic?
Using speedtest.net I clocked my wifi this morning at a little over 1mbps. Rebooting the device brings it back up to satisfactory levels. Within 5 minutes or so it dropped back down to a consistent 2mbps.
It's making watching any kind of streaming video on the device impossible, which makes the device pretty useless to me as that was it's primary function.

Bleeding Data

Greetings folks,
First month with the s4 and rogers sent me $50 in data overage charges.
I checked the phone and was shocked to see 8 Gb's of data use in 1 month.
I noticed that playing youtube or streaming on the video player runs through the data at a very high rate.
Does 500 Mb of data in less then 30 minutes of streaming seem normal for this phone ??
With the note 2 I had to work really hard to hit 4gb's an would usually run about 2.5 - 3 with heavy use.

streaming video will rocket you toward your data limit. seriously. youtube in 720 or 1080 will burn through a gig in an hour. use wifi for streaming.

Thanks glad to know I am not defective.
I want my Note 2 back !

How the hell did Anandtech get 8.7 hours of web browsing?

they say the test is run with the screen at 200 nits. 8.7 hours of screen on time is about twice as much as what I get and what everyone else claims they are getting. what gives?

Flea0 said:
they say the test is run with the screen at 200 nits. 8.7 hours of screen on time is about twice as much as what I get and what everyone else claims they are getting. what gives?
Click to expand...
Click to collapse
I downloaded that Coolify app the other day and my phone went mad, got really hot and I used 48% in an hour of straight web browsing so I deleted the app and the phone cooled down again.
I then tried another straight hour on the same site(different pages) and I lost 14% and both times the phone was on 44% manual brightness.