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Cell standby high

J

jamos316

Well-Known Member
Why is my cell standby at 51%?

I'm pretty sure this is the cause of my battery drain overnight issue as I would go to bed with 100% & wake up to around 80%. I have no wifi, data on overnight & put screen brightness to lowest setting.

I have a feeling that my location profile changing app 'llama' is the cause of this. I have now set llama not to do a cell poll while in sleeping hours.
All I want llama for is to auto change from normal profile to loud profile when I leave the house as I always forget to do this manually.

I also have an app that makes my flip case act as a smart cover by turning the phone on & off when proximity sensor is covered. I know this won't affect the 'cell standby' activity but do the sensors use a lot of battery. Or is it something that is constantly used anyway whether you use them or not.

Is there any other thing I can do to save battery.
 
It means that, of the power being used, half of it is being used by the cellphone radio standing by. That just means that your phone isn't doing much else. (The total of all the things in that list [and the ones not shown because the percentages are so small] is always going to be 100%. That's the percentage of the power being used, not the percentage of battery power being drained. (100% means that all of the power being used is being used - kind of evident.) Your cell radio could be using 2% of the battery power, but if only another 2% is being used by everything else, cell standby is 50% (2 out of 4) - even though total battery usage is only 4%.
 
My cell standby is around 50% in the morning, but i can go to bed with 100% battery (data off) and in the morning, still have 100% battery. Something is draining your battery overnight?
 
Yup. You're reading it wrong.

You also have to consider your battery's health. Over time, batteries tend to lose charge capacity, decreasing their standby time. Then the signal threshold. A phone will lose battery faster in an area with lower signal than one with good reception.
 
badblue1 said:
My cell standby is around 50% in the morning, but i can go to bed with 100% battery (data off) and in the morning, still have 100% battery. Something is draining your battery overnight?
Click to expand...

Different phones will drain larger or smaller fractions/hour. And cell standby will use more power in a weak signal area than a strong one, so even with identical phones and setups (very unlikely) 2 people may see different drains.

But as everyone has said, that number doesn't mean that cell standby is using excessive power. If it were 100% it would be *good* because it would mean nothing else was using power. So the real questions are "is your signal weak" and "what else is using power"?
 
Have just woken to see that it has only lost 13%. It's an improvement but why do I lose the 13% when it is doing nothing . Phone signal is normally 3 bars out of 4.

Do you think llama is causing the battery to drain & smart cover?
 
Do you think llama is causing the battery to drain & smart cover?
Click to expand...

You can answer that question yourself by disabling them for a day. Far more instructive than asking us for our best guesses :-)
 
on my phone it has two sim card slots. it displays a no sim card detected message when starting up. is there anyway to remove this
 
Wouldn't have thought so.

If you really want to dig you could install something like GSam Battery Monitor, which will give you more information on power usage than the system menu. But if cell standby is 50% there's probably nothing outrageous going on. And if Llama was the main cause wouldn't you see it in the power menu's statistics?

Edit: I've just spotted that you mention "smart cover". I've no experience of this, but it's another thing you could try disabling to see whether it makes a difference.

P.S. If you have seen 20% one night and 13% the next don't read too much into a few % difference in a single night if you turn something off, unless you know why you had that big variation between those 2 nights.
 
20% used over night of the battery.. and stand by using 51% (of the 20%)..
that is about 10% of the battery being used by phone in stand by mode.
that depends on the quality of the tower signal.. both from and too.
10% over about 8 hours.. not too bad.

the flip cover.. proximity sensor...
I think normally that sensor is only active when the phone is making calls or few other situations (the screen is on).
but with the flip cover.. it is being used to check all the time if the cover is closed.
so it is also using your battery more.

does llama use GPS to determine location? if so.. then it is using battery to turn GPS on and check.
I use "tasker"... it checks which tower I am connected to.. to see determine my location. this does NOT use extra sensors or radios, because the phone already has to be connect to some tower!
 
Llama uses cell towers. It saves the ID of cell towers your phone detects in a certain area, allowing it to 'know' your location.

If the phone is new it may just be syncing in the off peak hours.
 
I suggest you try rebooting your phone. My phone had some battery drain issue last week. For whatever reason, Google services was causing my phone to not go into sleep mode and draining the battery. After the reboot, the battery drain issue went away.
 
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