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chemist's Avatar
Administrator | Posts: 1,036 | Thanked: 2,019 times | Joined on Sep 2009 @ Germany
#33
Originally Posted by afaq View Post
...True some report miracles with 20+ hours with always online.
....
I have disabled every possible function of the phone and discovered it made no difference (lowest brightness, all radio intennas off - except phone function, vibration off, zero multi tasking) and battery drops life like a ....

- Internet browsing through the wifi drains the battery AS fast as 3G.
- When the phone radio is offline (underground train) the battery stabilises but still falls. What does this tell me? well that no application is sucking the battery excessively. No extra devels app uses the phone radio so this filters this possibility.
- Idle. Not really, connected through 3G (check emails etc, but not online on any IM account). But nothing else. Kinda idle i guess.

I know, with long testing that 2G is wonderful to the battery life. But who can seriously advise that we use 2G on a daily basis? it's fine for IM chat etc but when you have to open a browser window the pain returns.
Did you actually turn the radio off in the underground? Looks like it was just not connected what means to power up for signal strength automatically and broadcast for AP constantly till connection is established. With nothing on you tell you get that kind of graph? Nice, that looks like you got some stuff installed running in the background.
This battery-eye graph does not show much detail, would you mind to install batterygraph in replacement and take a full graph lets say charge till full when you get at home and turn radios off but GSM just no BT, no wifi, no data uplink and disable autoconnect and update for your clients (mail etc.) aswell. We will see what your graph looks like tomorrow.

The graph shows also that you have charge loss while charger is plugged in, there is already a bug filed about this behavior.
https://bugs.maemo.org/show_bug.cgi?id=8965

There you also see my graphs from batterygraph.
I found some weird CPU load I wasn't able to attach to any process but it started to drain the battery.