Database Users

Bay Area Hermes/TyTn users...

I also posted this over on howardforums. Thought it might be device specific, so I'm posting it here as well.
I just got a TyTn (628 s/n). I live and work in North San Jose, CA. When I turn on the phone, I get the "U" (UDMS available) for a few seconds, then it goes back to "G" (GPRS) and never returns to U.
I've stood a few hundred feet from a known Cingular 3G UDMS tower (corner of Nortech Pkwy & Disk Dr, San Jose) - same results...
I've "only" got the Media Net unlimited plan, and I'm connecting to wap.cingular. Could this be the problem? They're denying UDMS access to my account based on my data plan? Should I upgrade to PDA Connect?
Thanks!

Naw, I was in San Jose this weekend, and 3G was pretty spotty, except in certain places. At my friends house, I had 3G completely; but it was a HUGE battery waster. So unless I'm tied to a charger, I wouldn't use my phone very much in a 3G area. Unless they release an extended battery that is. I'm also on the $19.99 plan, and I was averaging about 600Kbps with 2-3 bars. You're fine on the data plan.

darkjedi said:
Naw, I was in San Jose this weekend, and 3G was pretty spotty, except in certain places. At my friends house, I had 3G completely; but it was a HUGE battery waster. So unless I'm tied to a charger, I wouldn't use my phone very much in a 3G area. Unless they release an extended battery that is. I'm also on the $19.99 plan, and I was averaging about 600Kbps with 2-3 bars. You're fine on the data plan.
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Hm, thanks.

I had full battery when I left around 2pm, a little browsing, speed tests, and push e-mail, I was at 20% around 9pm...that's really bad . Granted, I did have the backlight on a lot, and even had a few calls come in, so that wasn't just on standby. But I think it's the same drain as WiFi would be.

darkjedi said:
I had full battery when I left around 2pm, a little browsing, speed tests, and push e-mail, I was at 20% around 9pm...that's really bad . Granted, I did have the backlight on a lot, and even had a few calls come in, so that wasn't just on standby. But I think it's the same drain as WiFi would be.
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Click to collapse
That's ridiculous. I thought my Treo was bad..
Between battery life and lack of a good mail client, this might have to go on ebay .

Granted, I WAS using it a bit, so I can see why it drained, but it's a bit much if you ask me. So I'd only really use 3G if I had a charger or an extended battery (which I don't think they do).

Install the field test utility and tell me what do you see in the "2G reselection status" when it goes to G. San Jose is well covered and the opposite should happen i.e., G for 1 or 2 seconds and then U

We are founding in many instances exterior interference from illegal repeaters and some lab equipements which are causing a high level of noise in some cells forcing the phones to reselect to GSM.
While on GSM a 3G phone always scans the UMTS band in the background searching for good signals ( good signal strength and low inteference ). If the inteference ( measured by Ec/No) is high it will not go to UMTS

austin_boy said:
Install the field test utility and tell me what do you see in the "2G reselection status" when it goes to G. San Jose is well covered and the opposite should happen i.e., G for 1 or 2 seconds and then U
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Click to collapse
austin_boy:
First of all, thank you for your help.
I just went back to the HTC firmware since the Cingular didn't do anything for me. All of the field test options just say N/A - Do I need to go back to the newer Cingular firmware for it to work?
Thanks!

I'll be in San Jose next week to see how the HTC ROM goes.

darkjedi said:
I had full battery when I left around 2pm, a little browsing, speed tests, and push e-mail, I was at 20% around 9pm...that's really bad . Granted, I did have the backlight on a lot, and even had a few calls come in, so that wasn't just on standby. But I think it's the same drain as WiFi would be.
Click to expand...
Click to collapse
Push email with 3G is a battery killer ...

That could be it as well, as it was enabled the whole time...

Update: Got a 3G SIM from the Cingular store and it works great now .

I figured as much That's great news

no stable 3g connection

any1 els having this problem where it constantly switches from 3g and edge my g1 has a stable 3g but the nexus jus keeps losing it

Once mine locked on to 3G it has stayed on 3G. T-Mobile just launched 3G in my town before Christmas, not that it matters.
However, it is not as fast as AT&T 3G here.

I too have problem with 3G here the signal strength seems too low like 2 bars but on Nokia n900 i get like 4 bars even n1 seems switching back n forth between edge and 3g. while n900 stays 3G all the time at same place..
I will try this device for week and see if the problem is everywhere or something with tmobile network or else i have it send back.

theres a huge thread going on now on google about this issue. Hopefully they address this soon. http://www.google.com/support/forum/p/Google+Mobile/thread?tid=0bd8ccd4799040c2&hl=en

This happened all the time on my G1.
Perhaps it is Tmo.

As a comparison, what are peoples experiences in the UK with 3G?
This might help determine if it is a phone or network issue.

I'm having the same problem. I have a T-Mobile Touch Pro2 and a nexus one. the Touch pro2 holds on two bars of 3G while the N1 switches to EDGE. Sometimes it starts to hesitate between EDGE and 3G causing apps to say "connection problems". It seems that in order to feature a long battery life, it favors EDGE over 3G and the threshold for 3G is too high.
Where there's strong 3G footprint, the N1 shows full bar, but somehow it doesn't seem as fast as it should be (7.2 Mbps) although the fast processor and rendering compensates for that.
Hope they fix that soon. It's most likely a software problem. I recall the iPhone 3G suffered from a very similar issue when it was first released.

Im having this issue.
at 1st i thought it was only me, until i saw the post on Gizmodo. and looking at this link " http://www.google.com/support/forum/p/Google+Mobile/thread?tid=0bd8ccd4799040c2&hl=en&fid=0bd8ccd4799040c200047c99c44ddfe6"
it looks like alot of ppl are experiencing this issue. Im at work and ive always had full 3g bars with my MT3G, and my Nexus One keeps going in and out of it.. for the most part it stays on EDGE.. GRRRRR hope it gets fixed with a firmware update.

Anyone in UK with this issue?

I to am experiencing this issue in Florida
When I do tests from speedtest app I can get decent downloads anywhere from 500-900kbps, but upload somtimes is pitiful..often less than 100kbps.
I have also noticed that when I check my phone status and look at the network connection, it fluctuates between UTMS and HSDPA.
I have found that when I plug my N1 into the wall charger it seems to hold onto 3G much better along with better speeds. Not a solution, but maybe a clue to understanding cause?

saint327 said:
I have found that when I plug my N1 into the wall charger it seems to hold onto 3G much better along with better speeds. Not a solution, but maybe a clue to understanding cause?
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Click to collapse
Have you tested plugging it in in various parts of your house or where ever you are plugging it into to see if it helps the reception situation?
I really hope they get this figured out soon. I am holding off on hitting that Place order button until it's all ironed out. It's definitely a test of my will power. I was going to order it last night until I started seeing this issue crop up all over the place...

elkavayo said:
I'm having the same problem. I have a T-Mobile Touch Pro2 and a nexus one. the Touch pro2 holds on two bars of 3G while the N1 switches to EDGE. Sometimes it starts to hesitate between EDGE and 3G causing apps to say "connection problems". It seems that in order to feature a long battery life, it favors EDGE over 3G and the threshold for 3G is too high.
Where there's strong 3G footprint, the N1 shows full bar, but somehow it doesn't seem as fast as it should be (7.2 Mbps) although the fast processor and rendering compensates for that.
Hope they fix that soon. It's most likely a software problem. I recall the iPhone 3G suffered from a very similar issue when it was first released.
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Click to collapse
I find that the threshold for 3g is better balanced than on my htc magic. On the magic it was all too often to have one bar of 3g and not be able to download anything, timing out with connection errors. Nexus one works much better at low bars but also switches to edge/gprs when it's needed. I am on voda in uk from a house with fairly spotty 3g. So, for me I get a more consistent connection than with my magic.

vas41 said:
I find that the threashhold for 3g is better balanced than on my htc magic. On the magic it was all too often to have one bar of 3g and not be able to download anything, timing out with connection errors. Nexus one works much better at low bars but also switches to edge/gprs when it's needed. I am on voda in uk from a house with fairly spotty 3g. So, for me I get a more consistent connection than with my magic.
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Click to collapse
Perhaps this is true, but I have also been reading about people with G1s (and one guy with a TP2) that consistently get better reception with their old phones over that of the nexus. This is the part that disturbs me the most.
Maybe it's a power management issue which may be highlighted by the fact that plugging it in seemed to help?

rossiscatch said:
Have you tested plugging it in in various parts of your house or where ever you are plugging it into to see if it helps the reception situation?
I really hope they get this figured out soon. I am holding off on hitting that Place order button until it's all ironed out. It's definitely a test of my will power. I was going to order it last night until I started seeing this issue crop up all over the place...
Click to expand...
Click to collapse
Yeah, I've tried it both unplugged and plugged in in the same location. Haven't tried other power outlets/locations in home. I fall into the category of those who had a G1 and got solid 3G at the same location.

Anyone tried it plugged into a wall socket with one eye closed standing on a chair with the phone up your arse? Works like a dream.

vas41 said:
I find that the threshold for 3g is better balanced than on my htc magic. On the magic it was all too often to have one bar of 3g and not be able to download anything, timing out with connection errors. Nexus one works much better at low bars but also switches to edge/gprs when it's needed. I am on voda in uk from a house with fairly spotty 3g. So, for me I get a more consistent connection than with my magic.
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Click to collapse
Based on my experience, I'd have to disagree with you with respect to the Nexus, although you compare it to a phone that I do not have. More often than not, when Nexus has 1 or even 2 bard of 3G the link is totally unreliable and in most cases the application ends up showing a message box that says "no connection available: retry" (not exact wording), unless it switches to EDGE, there's no guarantee data will be exchanged with the cloud. On the very same spot, at the very same time, Touch Pro2 is able to maintain at least 2 bars of 3G and download speeds of 600 Kbps, while the Nexus is forced to 130 Kbs.
I drove today 25 miles (office to home) checking the nexus behavior, and only in very rare instances was able to keep full bars of 3G, in places where I know the 3G is strong.
I have also not seen the Nexus connecting through HSPA, only EDGE or UMTS, but I don't blame Nexus for that. It could be that this area has not been upgraded, in spite of T-Mo announcement that 100% of its network was HSPA.

rossiscatch said:
Perhaps this is true, but I have also been reading about people with G1s (and one guy with a TP2) that consistently get better reception with their old phones over that of the nexus. This is the part that disturbs me the most.
Maybe it's a power management issue which may be highlighted by the fact that plugging it in seemed to help?
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Click to collapse
I might be the guys with teh TP2 ;-) and I can confirm that.
Honestly, it's frustratig for all of us that jumped into the Nexus bandwagon after all the hype and big expectations, but I'm not too concerned about it. The iPhone 3GS went through almost the same situation verbatim when it was launched. I'm pretty sure this is a software issue and can be upgraded with an OTA patch. I'd say that it's in the best interest of all the parties involved (Google, HTC, T-Mo) to resolve the issue quickly and avoid the media backslash.
Now I may be wrong, and it could be a hardware issue, and then I guess Google will be seeing a lot of returns.

elkavayo said:
Based on my experience, I'd have to disagree with you with respect to the Nexus, although you compare it to a phone that I do not have. More often than not, when Nexus has 1 or even 2 bard of 3G the link is totally unreliable and in most cases the application ends up showing a message box that says "no connection available: retry" (not exact wording), unless it switches to EDGE, there's no guarantee data will be exchanged with the cloud. On the very same spot, at the very same time, Touch Pro2 is able to maintain at least 2 bars of 3G and download speeds of 600 Kbps, while the Nexus is forced to 130 Kbs.
I drove today 25 miles (office to home) checking the nexus behavior, and only in very rare instances was able to keep full bars of 3G, in places where I know the 3G is strong.
I have also not seen the Nexus connecting through HSPA, only EDGE or UMTS, but I don't blame Nexus for that. It could be that this area has not been upgraded, in spite of T-Mo announcement that 100% of its network was HSPA.
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Click to collapse
It does not indicate on the notification bar when it connects to hsdpa, but if you go to settings, about phone, status you will see it show any one of the following: gprs, edge, umts, hsdpa. BTW my htc magic never showed hsdpa, always stayed on umts (when in 3g), not sure if this is because of the difference in notification between 1.6 and 2.1 or whether the nexus one really does connect at higher speeds than magic. I also have another phone on the same network in my household, which is a blackberry bold 9700 and it gets similar reception to nexus one, alternating between gprs/edge/3g in my house.

I am having this 3g/edge problem aswell, i am also not able to be on wifi and 3g at the same time.

Blueman101 said:
I am having this 3g/edge problem aswell, i am also not able to be on wifi and 3g at the same time.
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Click to collapse
When you connect over wifi the phone disconnects from the mobile network (gprs/3g) and instead uses wifi connection. It is not possible to be connected to both.

Battery Life

Just wondering what battery life people are getting from their N1, considering an N1 or Desire v buying another HD2 on contract but would prefer a better battery life than I got on the HD2,

Not totally related to the OP... I'm considering getting the Desire/N1 from AT&T or Verizon (if and when they get them) Using the current state-of-the-art technology in these new phones.... is it still the case that CDMA consumes more battery power than GSM?

You guys know that you can do a search right? anyway I've been on wifi all night with light usage. So far its been 12hrs and I'm at 65%.

ram130 said:
You guys know that you can do a search right? anyway I've been on wifi all night with light usage. So far its been 12hrs and I'm at 65%.
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Click to collapse
Maybe I searched in the wrong places in the xda forum. I searched in the Imagio forum which is the only HTC world phone currently using CDMA & GSM, but there was nothing specific to the battery life of GSM vs CDMA in those threads. I also searched under the TP2. I know that the the CDMA N1 has yet to be released, so was looking for battery life information related to recent CDMA phones models which are also available in GSM... like the TP2. Maybe you found a CDMA vs GSM battery life thread that I missed, can you point me to it?

tamanaco said:
Maybe I searched in the wrong places in the xda forum. I searched in the Imagio forum which is the only HTC world phone currently using CDMA & GSM, but there was nothing specific to the battery life of GSM vs CDMA in those threads. I also searched under the TP2. I know that the the CDMA N1 has yet to be released, so was looking for battery life information related to recent CDMA phones models which are also available in GSM... like the TP2. Maybe you found a CDMA vs GSM battery life thread that I missed, can you point me to it?
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Click to collapse
Nope didn't see one here. Just saying to do that first. As for the CDMA I suggest you search else where because no one gonna know an answer for CDMA vs GSM in an N1 thread. You can just wait til its released, the phone ain't gonna go anywhere you know, it will be available after a month of release too.

Getting approx 48 hrs with standard use (bit of surfing, email, txt's few calls bit of music on the way into work etc).
Decent 3G coverage at work and wifi at home, phone rarely has to hunt for signal.
Phone was charged last night and is showing 89% remaining - unplugged since ~ 7am thismorning.
Screen usually sits at the lowest brightness which is fine for indoor use.
I found a HUGE difference in battery life switching chargers. Originally used the supplied USB lead via a cheapy charger adapter thingy (how techincal! - it's the ones which allow you to plug in a USB lead and charge your phone)
Now switched to the charger which came with my bluetooth headset and that's helped no end with battery life. A full charge takes MUCH longer (usually ok as its charged overnight) so that maybe something to do with it.

My battery life was awesome for the first couple days, but now its just sucks... I lost 3 percent while it was just sitting on my pocket on my drive to work.
Yesterday I played Homerun 3D for 2 hours also and went from a 100% charge to 62%.
But mine is rooted, has the baked goods rom, and an auto rotating launcher with 7 screens while the brightness is always at 100%. Yea I guess you can say I'm a power user

I leave wifi on all the time and am getting 60+ hours of life out of it before a recharge. 3g is a battery killer .. roughly 18 hours with 3g on the entire time.

ram130 said:
Nope didn't see one here. Just saying to do that first. As for the CDMA I suggest you search else where because no one gonna know an answer for CDMA vs GSM in an N1 thread. You can just wait til its released, the phone ain't gonna go anywhere you know, it will be available after a month of release too.
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Click to collapse
I see... I was looking for a "General" answer given the state-of-the-art of GSM and CDMA "HTC" smartphones as it relate to battery consumption. So the question still remains... given that xda is the forum where HTC smartphones are widely discussed I believe that posting the question here was adequate. The N1 is an HTC that uses components similar to other HTC phones. You might not think so... but we'll have to disagree on that.
EDIT: Btw, the question came to mind because a NYTimes article last week states that CDMA consumes more battery life than GSM. I recall this being the case in the past, but not sure if this is the case now-a-days. http://www.nytimes.com/2010/03/11/technology/11basics.html

To update - still at ~ 40%, no overnight charge. Moderate use last night.

This question is terribly subjective to the user/location. As one person point out, WIFI is more efficient then 3g, so some people see a huge advantage here.
My building also gets HORRID service, so my phone is constantly trying to find a signal which kills any phone battery
I think one cuold easily make the general statement that no this does not have the battery life of a blackberry, but the battery life is more then adequate. You can easily tailor your use to whether a charger is near.
If i know I cant charge it, I either carry a 2nd battery or take a few steps to save life. I turn my screen down(I like full brightness), clock the CPU down to 883, you could even turn off 3g networks unless you need Data for some reason. It would not be too hard to get this thing to 48 hours with normal talking/texting/some light browsing etc..
I am very impressed with the battery life overall.

seanowns said:
This question is terribly subjective to the user/location. As one person point out, WIFI is more efficient then 3g, so some people see a huge advantage here.
Click to expand...
Click to collapse
Let me qualify my question a bit more... Assuming that the signal strength from both CDMA and GSM sources are either at "optimal levels" or at "similar low levels" and using the "same model" state-of-the-art Smartphone... Will the battery of the Smartphone using CDMA, last longer than the same model Smartphone using GSM?
As it relates to the N1... I understand that when the N1 from Verizon comes out that folks will be able to compare the performance of its features against the performance of the same features on the t-mobile N1.

tamanaco said:
I see... I was looking for a "General" answer given the state-of-the-art of GSM and CDMA "HTC" smartphones as it relate to battery consumption. So the question still remains... given that xda is the forum where HTC smartphones are widely discussed I believe that posting the question here was adequate. The N1 is an HTC that uses components similar to other HTC phones. You might not think so... but we'll have to disagree on that.
EDIT: Btw, the question came to mind because a NYTimes article last week states that CDMA consumes more battery life than GSM. I recall this being the case in the past, but not sure if this is the case now-a-days. http://www.nytimes.com/2010/03/11/technology/11basics.html
Click to expand...
Click to collapse
I'm curious about it too. I think you should create a thread with the title instead. That way when you get an answer others searching for it can find it easy.
Highland3r said:
Getting approx 48 hrs with standard use (bit of surfing, email, txt's few calls bit of music on the way into work etc).
Decent 3G coverage at work and wifi at home, phone rarely has to hunt for signal.
Phone was charged last night and is showing 89% remaining - unplugged since ~ 7am thismorning.
Screen usually sits at the lowest brightness which is fine for indoor use.
I found a HUGE difference in battery life switching chargers. Originally used the supplied USB lead via a cheapy charger adapter thingy (how techincal! - it's the ones which allow you to plug in a USB lead and charge your phone)
Now switched to the charger which came with my bluetooth headset and that's helped no end with battery life. A full charge takes MUCH longer (usually ok as its charged overnight) so that maybe something to do with it.
Click to expand...
Click to collapse
What was the name of that bluetooth adapter? better yet what are the specs on the charger?
jz9833 said:
My battery life was awesome for the first couple days, but now its just sucks... I lost 3 percent while it was just sitting on my pocket on my drive to work.
Yesterday I played Homerun 3D for 2 hours also and went from a 100% charge to 62%.
But mine is rooted, has the baked goods rom, and an auto rotating launcher with 7 screens while the brightness is always at 100%. Yea I guess you can say I'm a power user
Click to expand...
Click to collapse
amlwaycooljr said:
I leave wifi on all the time and am getting 60+ hours of life out of it before a recharge. 3g is a battery killer .. roughly 18 hours with 3g on the entire time.
Click to expand...
Click to collapse
Guys, help me out here. I hardly even pass 12hrs with light usage on 3G with automatic brightness. Man what the hell are you guys doing to get such good battery life??? Did you charge the phone on the first day without turning it on? do you charge it off?? come on, I'm so angry that I got HTC to send me a new battery which should be here shortly. So any tips can help me out here.
I use wifi at home now, get like 14hrs, but with battery tools I get 20hrs last night. But there is something obviously wrong with my phone here. So please help me out here
Highland3r said:
To update - still at ~ 40%, no overnight charge. Moderate use last night.
Click to expand...
Click to collapse
..wanna switch batteries

ram130 said:
I'm curious about it too. I think you should create a thread with the title instead. That way when you get an answer others searching for it can find it easy.
What was the name of that bluetooth adapter? better yet what are the specs on the charger?
Guys, help me out here. I hardly even pass 12hrs with light usage on 3G with automatic brightness. Man what the hell are you guys doing to get such good battery life??? Did you charge the phone on the first day without turning it on? do you charge it off?? come on, I'm so angry that I got HTC to send me a new battery which should be here shortly. So any tips can help me out here.
I use wifi at home now, get like 14hrs, but with battery tools I get 20hrs last night. But there is something obviously wrong with my phone here. So please help me out here
..wanna switch batteries
Click to expand...
Click to collapse
my battery life is not what I would like to call great, but compared to some of these stories I guess I'm getting better than most.
The single biggest thing to help battery life is to have your phone rooted and use SetCPU to make a profile to not allow the processor to clock above 500 MHz when on standby.
Before all of you go crazy and say "OMG jz9833 I bought a 1 GHz snapdragon to run at 1 GHz" calm down. The droid runs at 600 MHz so when your screen is off why not have it run at speeds around the same as a droid? This helps.

jz9833 said:
my battery life is not what I would like to call great, but compared to some of these stories I guess I'm getting better than most.
The single biggest thing to help battery life is to have your phone rooted and use SetCPU to make a profile to not allow the processor to clock above 500 MHz when on standby.
Before all of you go crazy and say "OMG jz9833 I bought a 1 GHz snapdragon to run at 1 GHz" calm down. The droid runs at 600 MHz so when your screen is off why not have it run at speeds around the same as a droid? This helps.
Click to expand...
Click to collapse
Well im om stock so that aint gonna work for me. Thanks for the info tho. When I get root it will be the first thing to do.

Improved battery performance by turning off data roaming ?

Hi all,
Now I've not tried this myself however a friend of mine who recently got a DHD said he was lucky if the battery lasted a day on a full charge however by turning "Data roaming" off (even though he is not roaming) he is now getting anything between 2-3 days on one charge

Data roaming was turned off by default on mine and still the battery drained pretty quick.
Using data of any kind will affect the battery badly. Notes Traveler on my device is the cause of it needing charging every day.
Same as any phone, the more you disable the longer the battery will last.

If everything was implemented correctly by HTC, turning off Roaming should have no impact on battery life at all (provided you don't use Roaming).
I believe that your friend experienced the typical warm-up phase. For some (a lot?) people the battery life is terrible when they first use the DHD, but it gradually gets better.
Your friend probably attributes the increase of battery life to the disabled Roaming, while it is just a "natural" process.

I'm roaming all the time, and my battery is actually pretty good. If i don't use it much it can easily survive two days. My record is three days with light usage. (That was with the stock 1.72 ROM)

What is data roaming anyway???
Sent from my Desire HD using XDA App

Data roaming is set off by default. And data roaming controls data transfer when you are not on your home operator/network, i.e when traveling.

are your friend meant data connection?

MarkieSA said:
Hi all,
Now I've not tried this myself however a friend of mine who recently got a DHD said he was lucky if the battery lasted a day on a full charge however by turning "Data roaming" off (even though he is not roaming) he is now getting anything between 2-3 days on one charge
Click to expand...
Click to collapse
He probably means "3G" off? I've had mine since the end of October and got into the habit of charging the phone every night. But then wondered about the effects of turning off wifi and 3G as, currently, I'm at home most of the time and have a PC with 24" screen to play with. Anyhow, with 3G and wifi turned off most of the time I get 3 days or so from a charge. I haven't investigated turning just one or the other off as life's too short ....
HTH
Dave
PS: and someone will say, well what's the point of a smart phone if you're just using it like a dumb phone? Well, the "smart" bit here in this case is me ....

Yeah, 3G uses a bit, so the first thing i did was to disable it. No point for me using it actually, since it's WiFi all over the place here i live. If i need it, i'll simply enough just toggle it on.
Sent from my Desire HD using XDA Premium App

BazookaAce said:
Yeah, 3G uses a bit, so the first thing i did was to disable it. No point for me using it actually, since it's WiFi all over the place here i live. If i need it, i'll simply enough just toggle it on.
Sent from my Desire HD using XDA Premium App
Click to expand...
Click to collapse
You're roaming all the time and then in the next post you say that the first thing you did was to disable 3g... Are you just posting in order to follow others opinions or what?
And btw 3g doesn't actuality use much more power when compared to wifi, if you always use it somewhere where the signal is always poor then it's another thing.
Sent from my Desire HD using XDA App

dvhttn said:
He probably means "3G" off? I've had mine since the end of October and got into the habit of charging the phone every night. But then wondered about the effects of turning off wifi and 3G as, currently, I'm at home most of the time and have a PC with 24" screen to play with. Anyhow, with 3G and wifi turned off most of the time I get 3 days or so from a charge. I haven't investigated turning just one or the other off as life's too short ....
HTH
Dave
PS: and someone will say, well what's the point of a smart phone if you're just using it like a dumb phone? Well, the "smart" bit here in this case is me ....
Click to expand...
Click to collapse
If I meant 3G then that's what I would of said. So just to be clear, there is an option "Data Roaming" that when turned on will enable a data connection when you are in another country. My friend claims that while on his home network he has turned this option off and he has seen a big improvement on battery performance. If this is true or not I'm not sure, I just simply thought I would share his thoughts with everyone else.

I did this, once i remembered where it was and I got my old battery life back. So thats a bonus, not having to take my charger to work!

Vispe85
And btw 3g doesn't actuality use much more power when compared to wifi said:
Using System Panel graphs to monitor battery drain I'd concluded that 3G drains battery at about twice the rate compared to wifi.
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3G Drain on Jelly Bean

Are we likely to see a fix for this? We know there is a problem with 3G drinking battery but how likely are we to see a fix. Solutions like disable 3G aren't viable for a lot of people, so I just wondered what peoples thoughts on this were.

Try changing your modem. You should see a slight improvement in battery life, nothing major but still better than nothing.
Sent from my GT-I9000 using Tapatalk 2

Yeah a modem did help but I still had a big problem. Are we likely to see a fix, I remember this being a problem with ICS which is why I reverted back.

Its not the modem. My phone stock uses the XXKG3 modem, and i have been using that on ICS and now into JB. Jellybean definitely has worse battery concerning 3G / H for some reason. I just barely squeeze a day out of mine.

Yeah, I was struggling to get even a day. I tried almost all of the Jelly Bean ROMs and they all suffered from the same problem. I really wanted to stick with JB, especially C-ROM because it was like a dream to use but on a good day I'd get about 7 or 8 hours maybe? I would always have to plug it in twice a day. Currently trying SauROM which is better but I'm starting to think that the best for battery life is genuinely a stock rom like JVS.

skezza said:
Yeah, I was struggling to get even a day. I tried almost all of the Jelly Bean ROMs and they all suffered from the same problem. I really wanted to stick with JB, especially C-ROM because it was like a dream to use but on a good day I'd get about 7 or 8 hours maybe? I would always have to plug it in twice a day. Currently trying SauROM which is better but I'm starting to think that the best for battery life is genuinely a stock rom like JVS.
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with any rom I've got a day and 6 hours depends on usage

On Jelly Bean?

did you limited your speed to 3g or do you also use hsdpa? if you use hsdpa, give 3g a try i think the battery drain in 3g is a lot lower ... in my opinion if you are not downloading 3g is fast enough to browse or youtube.
for just instant messaging you can give 2g a try

2G isn't really usable on Three mobile.
I don't know how to limit to just 3G. But yes I normally use HSPDA. That said, we should be able to use it without draining our battery

I'm not getting any major battery drain here. I can last a full day on HSDPA and or WiFi.
Sent from my GT-I9000 using xda premium

Really?

skezza said:
Really?
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Yup
Sent from my GT-I9000 using xda premium

if you will buy a strong battery 1800-1900 mAh, you will see the different

Yeah, that's the alternative. Bigger battery I guess.

skezza said:
2G isn't really usable on Three mobile.
I don't know how to limit to just 3G. But yes I normally use HSPDA. That said, we should be able to use it without draining our battery
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You CAN limit to just 3G. You have to go to Advanced Settings or Galaxy S Settings (depends on a ROM) and go to HSDPA and put it to UMTS mode only. It'll switch it to 3G and will consume less battery
Sent from my GT-I9000

Helloworld294 said:
You CAN limit to just 3G. You have to go to Advanced Settings or Galaxy S Settings (depends on a ROM) and go to HSDPA and put it to UMTS mode only. It'll switch it to 3G and will consume less battery
Sent from my GT-I9000
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in my opinion, thats the point, go to settings/advanced/RADIO in your case hsdpa + hsupa should be ticket, simply tick umts an you should notice, the changing radio icon in the status bar (no longer h, but 3g).
your 3g and hspa power consumption depends really strong from the signal strenght and in your phone is connected constantly or changes often. bad reception causes a large waist of battery power.

My guess is you have Google Now / Maps running in background which always uses your data.

darristan said:
My guess is you have Google Now / Maps running in background which always uses your data.
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On slim 2.9, I found that removing G now, and turning off all location tracking increased battery life. Now I can get a day and about an hour/90mins of screen on time with data/wifi only on when using it. I suppose after more than 2 years of use on the one battery charging every day or more, there's only so much one can expect from a device and battery.

But isn't it recognized that this is a problem? The 3G Bug? Nothing to do with Google Now etc

theskymoves said:
Now I can get a day and about an hour/90mins of screen on time with data/wifi only on when using it. I suppose after more than 2 years of use on the one battery charging every day or more, there's only so much one can expect from a device and battery.
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in my opinion thats not enough, do you mean 24 hours or 16 hours? could be a little more with 90 mins of screen time, but you shouldnt need more.
inverted apps can by the way help too, avoid white and light colours as background