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Kumabjorn · 06-17-2017, 04:34 AM

I decided the time had come to baptize my Onyx Boox Max Carta. Hence, I decided to take along the OBMC to my local Misudo (Japanese doughnut shop) and nothing else. Well, well, well... when I took it out of its sleeve it showed a charge cable and a battery icon with a flash symbol through it. Something must be wrong, I thought. I charged if fully less than three days ago and after that I used it at most for an hour, and I know I turned off both WiFi and BT specifically to save battery.

So, returning back home, it was with some trepidation I inserted the micro USB charge cable, but the screen immediately turned on and it booted up. I went into Android System --> Battery and it reported battery usage 2d 5h 44m 38s on battery.
Divided by:
Device idle 46%
Android OS 43%
Screen 5%
Wi-Fi 5%
Browser 2%

Why the hell is the OS so active when turned off, and why is there something called Device idle that eats up juice? And more importantly, will 4.4 rectify this?

06-17-2017, 04:34 AM	#178
Kumabjorn Basculocolpic Posts: 4,356 Karma: 20181319 Join Date: Jul 2010 Location: Sweden Device: Kindle 3 WiFi, Kindle 4SO, Kindle for Android, Sony PRS-350 and PRS-T1	I decided the time had come to baptize my Onyx Boox Max Carta. Hence, I decided to take along the OBMC to my local Misudo (Japanese doughnut shop) and nothing else. Well, well, well... when I took it out of its sleeve it showed a charge cable and a battery icon with a flash symbol through it. Something must be wrong, I thought. I charged if fully less than three days ago and after that I used it at most for an hour, and I know I turned off both WiFi and BT specifically to save battery. So, returning back home, it was with some trepidation I inserted the micro USB charge cable, but the screen immediately turned on and it booted up. I went into Android System --> Battery and it reported battery usage 2d 5h 44m 38s on battery. Divided by: Device idle 46% Android OS 43% Screen 5% Wi-Fi 5% Browser 2% Why the hell is the OS so active when turned off, and why is there something called Device idle that eats up juice? And more importantly, will 4.4 rectify this? Last edited by Kumabjorn; 06-17-2017 at 04:52 PM.