[spm123]

Hi,

I have E71 from 4 weeks, its the best phone ever, in the beggining there was a problem with garmin, but now i close application after using garmin. Now i saw that after restart the energy is normal abount 0,02 - 0,03 but if i start WIFI i browse some sites, when i close browser and turn of WIFI scan there is energy drain every one minute and it is about 1W. Does somebody knows what is the reason? There is picture of Energy Profiler with 2 drains between 1 minute

[thundertiger]

See that little 4 box thing next to the battery Icon? That means your WiFi is still turned on. Are you sure you exited out of the browser completely? It might still be running in the background.

To find out press AND HOLD the home button. After a second it should pop up with a window listing running programs. Home screen will always be there. It will also list any other active program that is still running in the background. If there is anything else open you can select it and exit out of it completely.

[pankola]

It is probably Garmin causing this problem, look at this topic

[marius_sirbu]

Hello all,

I have exactly the same problem: I am running the EnergyProfiler only (there is nothing else running in the background) and I see the same behaviour: I have a pick of 1W every minute (for few seconds) and then it goes down. This pattern is very regular, I have started the profiler few times (I have also restarted the phone) but still I see the same pick every minute.

On average, the power consumed is 0.05W.

And also I have the WiFi icon next to the battery icon, even if the WiFi is set as "WLan scanning off". Actually it sits there all the time, is that normal?

Still there is something interesting that I have to tell you: the first time I have run the profiler, it shown me a flat line, no picks at all. The average consumption was 0.01 W.

I would really like to understand what raised the consume from 0.01 to 0.05.

Any ideas, advices ?

Thank you very much in advance,

Marius

[marius_sirbu]

Hello mate,

I was telling you I had exactly the same problem.

In the Energy Profiler I had picks of 1W and also the WiFi icon.

Try the following: Goto Settings>Connection>Wireless Lan>Show Wlan availability. Set this to Never. 

Somebody told me this (and he seems to be right): <<Show Wlan Availability sounds the same as Wlan Scanning and it more or less does the same thing. But for some reason, the phone has both Wlan Scanning and Show Wlan Availability. Switching off wlan scanning does not disable Show Wlan Availability. They seem to be 2 different functions and both can be switched on or off separately. >>

Please let me know if it works,  as it worked for me and now I do not see anymore picks.

Kind regards,

Marius

[marius_sirbu]

Hi everybody.

I have performed a new test with the Energy Profiler tool. As I said in my previous post fter setting "Show WLan availability" to Never I do not see anymore the picks.

Still, the power consumption that the profiler shows me is around the same value like the one having the regular picks. The average consumption is 0.04W.

Am still wondering how and if I will be able to bring this level down to the value of 0.01W which the profiler shown me in my first test on the phone.

All tests performed after the initial one shown me an average value of 0.04 - 0.06W.

Do you have any ideea about this? I would be really curious to ounderstand what has rasied the power consumption from 0.01 to 0.05.

Thanks in advance,

Marius

[thundertiger]

An average of .04-.06 watts with the phone being idle is excellant in my opinion.  I don't think you'll ever get it to .01 watt.. that was probably just a fluke.

[marius_sirbu]

Hello,

Regarding the average consumption that the Energy Profiler is showing, I am not sure I understood the corect meaning.

For example, if it is showing an averange consumption of 0.05W, does it mean that the phone is consuming 0.05 W/second? Or does it mean the total consumption for the duration of the test?

Thanks,

Marius

[marius_sirbu]

Hello mate,

If you think that an average of .04 - .06 is excellent then how come the profiler shows me the maximus battery life as around 175 hours? (The number in the top right corner indicating the amount of time expressed in hours the battery will discharge in, with the current configuration)

Having no aplication running, the phone is fully charged I would have expected that the Profiler told me something like 300 hours (the Nokia specification states that the standby time is 17 days !!!, which expressed in hours is 408).

As you see I am far away from that value.

Any ideea?

Thanks in advance,

Marius

[thundertiger]

Do people ever actually GET those stated standby times? Seriously?

The standby time is with the phone just sitting there.  Everything possible being turned off.   If you left your phone just sit there all day without touching it, without getting a phone call or SMS.  Then that battery life counter may increase.

Otherwise your 175 hours = 7.29days which is still pretty darn good.

[marius_sirbu]

Hello mate,

Well, as I said before I do not get them. But I am a test engineer so I could not resist to the temptation to test my new phone. And the standby mode is a MUST from the testing point of view.

And I was saying that except the profiler, there was no other application running.

Based on the battery capacity  of 1500 mAh, it means that for getting a standby time of, let's say 14 days, the phone should consume 1500 / (14 * 24h) = 4.46 mAh

In all my tests, the current consumed was between 13-15 mA (three times more that the optimal value of 4.46 !!!)

So I am wondering if my battery is faulty or what else....Has anybody tried something similar?

I think it would be a good idea to share the results of these tests between us, because it helps identify faulty batteries or malfunctioning phones.

Regards,

Marius

PS: still waiting for others to post their results

[2holdon]

OK. I only have a E51. But to help out with more data I decided to give it a try.

Having nothing running I get a consumption of 8 mA (Averaged over 2 minutes with pretty good reception - at least I think.)

Calculating this as you proposed would make it: 

<Hours> = <Capacity in mAh> / <Standby Consumption in mA> 

In my case that would be 1050mAh / 8mA = 131,25 hours which is almost 5,5 days. However I don't think I can get that under any circumstances. I might just leave it sitting on the balcony whenever I get a new phone, but right now I am using the beast. :-)

Are you sure you switched everything off? Keep in mind, that just the display of the clock in standby will consume energy (don't know how much that actually is though). Only with the totally black screen you are keeping it really low. 

Did that help?

edit: I corrected some values.

Message Edited by 2holdon on 10-Jun-2009 04:17 PM

[marius_sirbu]

Hello and thanks for your replay. it is really useful.

In your case, based on the E51 specifications, you should have 300 hours standby time = 12 days, as specified by Nokia.

Based on the result of your test, it means you get 5.5 days which is almost half of what is specified by Nokia.

About swiching everything off: well, I have done my best, but you are right, the date and clock was still displayed.

This is because as far as I know, on E71 if you have the black screen, the breathing light is still active.

On the other hand if you disable the breathing light, you will get the date/clock displayed on a gray thick line (as in my case).

There is any way to completely disable both the "Breathing light" and "Date/Clock" at the same time?

Regards,

Marius

PS: what is the correct value you were talking about in your test? 4 mAh or 8 mAh?

[2holdon]

Well I am not an expert. Yesterday I ordered a new battery (supposedly Original Nokia, but via eBay), so maybe when that arrives I will be able to get some more reliable values. 

About the "breathing light" I have no idea. Not even what it looks like, since the E51 comes without it. :-) Maybe the manual has a clue?

About the values: The ones posted now are the ones I measured. The 4mA(!) were just bad reading on my part. 

Anyhow: Are you sure standby time can be calculated as easy as you suggested? I am not an electrical engineer, but maybe there is something more to take into consideration, as this is really far off (in my case > 50%). 

Any Nokia Engineer reading this and wanting to make a comment? :-) 

Cheers.

[2holdon]

OK. A few more things I did:

Switched off Active Standby. Also in Themes I told the phone to not show date and time but a text ".". However in complete standby I still got the "jumping bar" with the time in it. Does anybody know how to shut that down also?

I remember from early days, that having a comletely black screen instead of a clock on it, can save you a lot of energy. Reason for that is supposedly, that the phone will a) have to show pixels instead of nothing and b) also hast to constantly repulse/refresh the display every few seconds to make sure it shows the correct time.

Can anybody confirm that? 

Since connection to the network is probably the biggest all time sucker I decided to also note the dB of reception. Which is as low as -50dB. This seems to be good. When I cover the antenna part of the phone the reading gives me -100dB. 

Also I turned off UMTS mode and went for only GMS (this however does not seem to make a huge difference).

The best values I could get were 5mA. Averaging over a short but reasonable time span (hold 8 and then scroll) however got me the 8mA again.

Then I had the smart idea of sending the phone to offline mode. However even that leaves me with sometimes 5mA but mostly 7-8 mA (again averaged over reasonable short periods.

That's it ideawise from me. Anybody else? :-) 

[marius_sirbu]

Hi mate,

This is very interesting!!!

I was never able to get a current consumption less than 10mA (please pay attention, now I talking about current consumption and NOT power).

If your test gave you a result of 5mA, this is very good!

Are you sure you are not mixing power (Watts)  and current (Ampers) ?

So when you are saying it gave you 5mA is that correct? Or you are trying to say it gave you 0.05W ?

By the way, it seems that the current intensity is lower when phone has the black screen saver and the breathing light off (Scenario A) instead of viceversa (Scenario B-breathing light off and screen saver showing date and clock on a gray thick line) .

It gave me a intensity of 10mA in Scenario A compared with 13 mA in Scenario B.

Anybody else?

Cheers,

Marius

[2holdon]

Oh well, I never said I knew what I was talking about. :-)

For somebody to figure out what I meant please see the attached screenshot (should have done that earlier... I guess you never stop learning). :-)

Yeah, I got it down to 7mA in this one. However basic story is still the same. 

Message Edited by 2holdon on 11-Jun-2009 09:40 AM

[marius_sirbu]

Hi everybody,

It seems that my E71 does not memorize the changes to some settings.

For example, if I have the WLan scanning = ON, and then I turn it off, performing a test with the Energy Profiler tool it still shows me the picks.

In order not to have them anymore I have to restart the phone.

Does this issue happen for you as well?

Anybody else tried to use the Energy Profiler to see what is the power consumption?

Has anybody managed to keep the phone more than one week without recharging it?

Regards,

Marius

[buger]

gsm/umts + wlan scanning on + wlan notify on (5 mins) + gmail push + another provider push + wefi autoconnect + headset

 

gsm + wlan off + wlan notify off + no push + wefi deactivated, still getting peaks every 60 seconds... can't find what it is.

Message Edited by buger on 27-Jun-2009 11:01 PM

Message Edited by buger on 27-Jun-2009 11:01 PM

Message Edited by buger on 27-Jun-2009 11:02 PM

[marius_sirbu]

Hi mate,

When you say "Wlan notify off", do you men the option Show Wlan availability which you have already set to Never?

In case you have done this, try to restart the phone and repeat the test.

Btw, do you see the Wlan icon on you homescreen?

Cheers,

Marius