[peterh338]

I see in the Nokia 700 specs:

GSM Standby Time up to 465.0 hours

That is about 10x longer than the battery lasts for, if the phone is not used at all.

TEN TIMES.

What am I doing wrong?

[JackMerson]

The actual real life on battery is much lesser than the specs suggest.
The results will drastically reduced if you use the phone. Even if you don't use it, the results are not much better when your email and social are not automatically update and no apps running in background. And still, it's nowhere close to that 465 hours standby time. This is probably because smartphones use more power compared to feature phones and it's possible that the processor is still working when you lock your phone.

In anyway, the results up there are only a test where everything are turned off except the 2G/GSM itself.

I could be actually wrong, so some people might explain better than I do.

[peterh338]

Yes but the "465 hours" the Nokia's official figure for the 700.

I can't see how they achieve it.

I don't have any regular email checks enabled, etc.

[aspergerguy]

Another factor to take into consideration is that in Belle FP2 processor over-clocked from 1GHz to 1.3GHz and doubt that this is reflected in quoted standby times either!

[JackMerson]

That's something I've been wondering too. I could only assume that they test each phone by screen off (Locked), all apps closed, no push notification at all and right temperature. (Too cold or hot does affect battery life)

And anyway,aspergerguy does make sense here.

[farby]

..or also may be without the SIM inserted so that varying signal strength also doesn't have its effect ...

[JackMerson]

But the test did say 2G and 3G.
It actually says 465 hours of stand by in 2G..
Probably the GSM signal was on the full bars when tested as inconsistent signal may also affect battery life.

[farby]

---

JackMerson wrote:
But the test did say 2G and 3G.
It actually says 465 hours of stand by in 2G..
Probably the GSM signal was on the full bars when tested as inconsistent signal may also affect battery life.

---

You may be right ...

[peterh338]

Something very weird is going on in these standby time tests.

I have two N700 phones and both, from a fresh charge preceeded by a total battery discharge, last about 16 hours if not used at all, with about 3 bars of signal on both.

No regular email updates enabled, everything like NFC is disabled.

One is Vodafone and the other is Virgin (T-Mobile/Orange/EE).

To get from 16 hours to 400+ hours is going to involve something "interesting" and I would suggest it is something which would land Nokia in a court, in the UK at least, under the Trade Description Act.

I have to add though that the 16hrs would have been about 48hrs before the latest Belle update.

[JackMerson]

The 700 is not the only phone that can't reach that kind of stand by time. My 710 can't even get through 36 hours.. My Nokia N9 can only pass up to 67 hours.

In fact, the specs suggest that each has more than 300 hours stand by time but the real life battery life are nowhere near..

So does all smartphones.. Whether it's an iPhone, Samsung or HTC, it's nowhere near the results on its specifications.

[farby]

My Nokia 5800xm with its original Battery which is almost 35 months old remains in standby for about 13-14 days..(312-336 hrs) as against the specified 406 hrs. but with one condition thats mentioned in my post above..i.e. without SIM ..reason I have got my regular SIM replaced with a Micro SIM to use it in Nokia Lumia 920 and if any other working SIM is used, can't stop incoming calls / SMSs which defeats the purpose of the test..

[peterh338]

I've been doing some searches.

Installed Appstop (it's in Nokia shop but the v1.2 .sis file is not hard to find on google).

Stopped these:

aknspasrv

Weather

All WRT Widgets

gallery

and the phone works as before.

There is a huge amount on the web about stopping these, because people are reporting severe battery issues. The weather service especially...

I will do an all-day test tomorrow, to see if anything improves.

[peterh338]

Partial success #1:

DISABLE MAPS IMPROVEMENT in Nokia Maps (under Settings / Drive).

What this does is it goes online periodically and sends back to Nokia data on where you drove. So, lots of power used keeping WIFI up. They claim it is used only on WIFI and not 3G but it sure won't improve your battery life!

I found with AppStop that with MI enabled, the Maps app is running in the background continuously. With MI disabled, this is no longer the case.

[farby]

..so its leading to JackMerson 's post (Message 2) which says.."the results are not much better when your email and social are not automatically update and no apps running in background."

[peterh338]

I don't understand the above post.

This is an early report but having stopped those few processes

aknspasrv

Weather

All WRT Widgets

gallery

with App Stop, I am seeing a dramatically improved battery situation.

If I get time I will try to find out which of them is the cause of the "12hr battery life".

However I also disabled Maps Improvement in Maps / Settings / Drive. That should prevent spurious internet connections during/after any satnav session.

[JackMerson]

This is just my assumption. But on Maps, you use Wifi or 3G for the maps improvement. This of course could take a lot of battery life.

The thing is, the Nokia 700 has an AMOLED display, which has more battery consumption when it display bright (White) background, and the Maps application has the dominant of white colour displayed. All this sums up with 3G activate will reduce battery life, for sure. Not to mention that the 1110 mAh battery is not huge at all..

Now that you have deactivate the Maps Improvement, this should helps saving some juice for your battery.

Since you have already close all the apps on your phone, I am not surprised that the battery life does improve.
Note though, that when your phone is locked, the processor is still working (Though not affect the battery life that much), which could slight reduce battery life.

[peterh338]

"But on Maps, you use Wifi or 3G for the maps improvement."

Not quite according to Nokia, who claim (can't find the link now) that Maps Improvement sends back the data only on WIFI or some other non-mobile internet connection.

The BIG Q is what happens if the phone finds the typical commercial wifi network, which is wide open but gives you zero connectivity until you login (or pay). ALL wifi devices have a problem with this, because all will try wifi over 3G but all of them are too stupid to do a simple connectivity check (e.g. by doing an HTTP request to a known website e.g. google.com).

The typical device will spend tens of seconds banging away onto a wifi access point before it gives up and falls over to 3G, but in the meantime it has used up a lot of power.

And in a typical mobile scenario, the phone owner will be walking down the street (e.g.) and picking up loads of unsecured (but unusable) wifi access points, and the Maps Improvement process will be trying to connect to these, one after the other, but almost never succeeding.

The Iphone/Ipad have huge issues with this too, which are solved by disabling wifi unless you intend to connect to a known-good access point.

"Since you have already close all the apps on your phone, I am not surprised that the battery life does improve."

I killed only the few "unknown" apps, and anyway background apps are not supposed to draw power unless taking up a good slice of processor time - in any half competent multitasking operating system.

Thus far, 7hrs after disabling those apps on a freshly charged phone, the battery state has moved down just the tiniest visible amount, despite me having been using the phone for 3G for about 20 mins. Unless the battery state is lying, this is a massive improvement.

[peterh338]

Update:

I can confirm that leaving the Maps app running in the background (as happens every time it is started and exited) does not seem to impact battery life.

However I do have Maps Improvement OFF.

[JackMerson]

With the Maps Improvement turned off, you notice that the battery life on your phone is significantly better. I guess that explains it all..

[peterh338]

"With the Maps Improvement turned off, you notice that the battery life on your phone is significantly better"

That may be, and I am doing 1-day tests with two phones to narrow it down.

However I think there is one other process responsible for the heavy drain in FP2, and I should narrow it down over the next few days.

I am using AppStop to terminate selected processes.

Maps Improvement should not cause the constant heavy drain we are seeing in FP2 unless it has a serious bug, because I haven't used my phone for satnav since before I installed FP2, and MI isn't supposed to be returning anything to Nokia except during or after a satnav session - AIUI.