Consider the below case.
1) A mobile phone is booted. Jumper reset powermaster visonic. At this moment it can be said that it is in run mode where the power consumption is more.
2) If no activity is done, after sometime the screen goes dim.
3) After further inactivity, the screen completely goes off.
2) If no activity is done, after sometime the screen goes dim.
3) After further inactivity, the screen completely goes off.
a) Now my question is, can we say that the mobile phone was in standby mode and sleep mode in above steps 2 and 3 respectively?
Another question is, suppose we are playing some music and we leave the mobile like that for sometime. In this case also the mobile phone goes through 2 and 3 steps mentioned above. But the only difference to earlier scenario is that music is being played in the second scenario. In this case, can we say that mobile phone was in standby and sleep mode respectively in 2 & 3 steps when the music is being played.
Vadim Kotov5,22477 gold badges3636 silver badges5050 bronze badges
user796345user796345
1 Answer
If no activity is there for Linux, CPUIDLE threads gets scheduled by scheduler as it is the least priority process and it brings the CPU to various low power states, where as other peripheral are governed by various other concepts of OS.If screen goes dim it can lead to two possibilities :
- Partial wake load is help and system is down (some power save)
- Linux suspend called (echo mem > /sys/power/stae) and full device is suspended, (huge power saves, as only ddr is active that to in self refreshing mode along with ALWAYS ON module)So just by seeing you cant say its in sleep or suspend mode, but if say your touch or some activity other then register WAKE UP event brings the screen up, your device was in sleep mode not suspend mode.WAKE UP events usually are 'power on key', alarm, network packet (ie a call or message etc)
And for your second part of question, it belongs to low power audio concept, it varies alot with your device architecture.Most common in android phones are putting the cpu in 'Low power state' and periodically waking them up to copy the music data to DMA, which can be played.
There are so many concepts used in the scenario you have used varies with OS and architecture and application, I have tried my best to give you a bird's eye view.
Saurabh SengarSaurabh Sengar50411 gold badge77 silver badges1515 bronze badges
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Cell Phone Standby Mode
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I hope this hasn't been asked before; if it has and I searched on the wrong keywords, my apologies.
Is it possible to set the Lumia 710 up so that it ends a current call when I press the button on top of the phone to put it into standby mode?
I've been caught a couple of times when leaving voicemail messages by the fact that I press the button, the 'phone plays a 'ker-lick' noise and the screen goes black; but when I switch it back on again, the connection's still open and the call is still on-going.
Normally, this isn't an issue, as the call ends when the other party puts their phone down, or the voicemail reaches the end of the available message time; but I recently called someone who's got an honest-to-goodness answerphone on the shelf next to their phone, and it was happy to leave the connection open for well over an hour. As a result, I've just received a bill from my provider costing two-and-a-half times as much as usual - money I can scarce afford as I'm currently 'resting' between jobs.
It would be neat if switching the phone off (or, at least, putting the phone on standby) ended the current call..
David
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On the battery use screen, what are the differences between Cell standby and Phone idle items?
user16112
overrideroverrider
1 Answer
I think 'phone idle' just means general power use from the phone being on (listening for user activation, waiting for scheduled app actions, basic memory and CPU 'being on' stuff etc.) whereas 'cell standby' is about keeping the phone active on the cell network (brief signals back and forth with cell towers alerting them of your presence, listening for calls or SMS).
keithjgrantkeithjgrant1,91444 gold badges2020 silver badges2525 bronze badges
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I have a 5s that isn't water damaged and the battery drains really quick in standby. It has been updated and I've replaced the battery. Any ideas?
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Comments:
I have the exact same problem at the moment with one iPhone 5. So far I have check the battery if it is good with multimeter, all good. I am cleaning the phone from liquid damage and we will see if it does improve the battery life. I think may be power management IC or U2 IC, but not sure yet. I will have to roll out everything else before start replacing IC. I hope you find some more information on this problem.
Hey I have the draining issue and I get only 2-4 hours of standby and my iPhone is getting really hot any ideas to how to help
While I was watching YouTube in my bathtub I dropped my phone and I was is the water for about 3 seconds. A few days later I noticed my battery is draining faster. Could the water make my phone die faster?