spammyspam, on Jun 19 2010, 19:05, said:
I lose at least 5-10% per hour standby on my stock ROM. I've rooted now so will have a play, but I don't see myself getting anywhere near 1%.
Perhaps this is network dependant?
here are some thoughts. last week, while wrestling the battery drain, I have noticed that the back bottom part of the Desire is quite warm. not the battery, but more likely a processor or radio module. when I switched radio off, the warmth was gone as well as the battery drain. I have tried different radio and system ROMs and had no improvement at all, except, as I said, when I drive about 50km away, everything suddenly become normal.
also, at the same time, a friend of mine have got another Desire from local provider and it was working perfectly until he flipped "Use wireless to determine location" check box. In 5 minutes he started to complain about the same problems -- warm back side and enormous battery drain. Unchecked the check box and everything was back to normal. This made me think there are some incompatibilities between networks and operators and this might pretty much result in radio module disconnected and connected back every second or so, sucking juice from the battery at the alarming rate.
Next my move was, obviously, to disable "wireless location" services. Still no results.
Then, thanks to my friend, I've got the firmware update from the local provider and found some parameters in build.prop, which were quite different from the ones I had. I have carefully merged "ro.ril.*" sections of the config files and rebuilt new firmware update image. Which, more or less, solved the problem.
Still, there's a question about how different radio versions behave regarding the battery use, but it's not critical and I can check this later.
Summing it up,
1) turn off the radio to see if this problem is really radio-related
2) disable "wireless location" feature and
3) get build.prop from someone's phone with good battery life (belonging to the local provider) and try to use his radio settings in your new firmware image.