Losing large battery % overnight (standby)

[anon(10311036)]

With 3 hours and 49 minutes of SOT and 19% of juice left is not bad. Maybe because of weak signal?

Yes, maybe. I think its the poor signal in my room. Yesterday I went to bed with 42% battery (wifi on) and woke up with 20%. Its a huge draining for me, since I almost dont run any apps that drain battery a lot.
I will try to leave it on airplane mode today to see if it is just a signal problem. I hope so. If its not, I will take it to warranty.

 

[Rukbat]

You know, with airplane mode off. My S9+ drains more than 5% overnight. But i blame it on weak signal.

The reason a weak signal drains more battery is that if it's weak coming in, it's going to take a higher-powered signal to reach the tower, so the phone goes to high power. But in airplane mode it's not transmitting, so even if there's no signal, it has no effect on battery drain.

@Ozzie88:

"I also removed my SDcard, I read somewhere on XDA Delvelopers that a malfunctioning card can give this issues." It would - to the point that the phone would never finish booting up (when I say never, I mean like if you plugged in the charger and waited for 25 years - the card has a file with a block lined to a previous block, so Media Scan is reading that loop until the sun goes out). Pulling the card out every night is just going to wear the almost non-existent gold plating off the pins.

 

[anon(10311036)]

The reason a weak signal drains more battery is that if it's weak coming in, it's going to take a higher-powered signal to reach the tower, so the phone goes to high power. But in airplane mode it's not transmitting, so even if there's no signal, it has no effect on battery drain.

@Ozzie88:

"I also removed my SDcard, I read somewhere on XDA Delvelopers that a malfunctioning card can give this issues." It would - to the point that the phone would never finish booting up (when I say never, I mean like if you plugged in the charger and waited for 25 years - the card has a file with a block lined to a previous block, so Media Scan is reading that loop until the sun goes out). Pulling the card out every night is just going to wear the almost non-existent gold plating off the pins.

yes, i know that. But im not sure if that is what is causing my battery drain. Almost 25% overnight its a huge drain. I wish I have a solution for this

 

[Hermes Hidayat]

The reason a weak signal drains more battery is that if it's weak coming in, it's going to take a higher-powered signal to reach the tower, so the phone goes to high power. But in airplane mode it's not transmitting, so even if there's no signal, it has no effect on battery drain.

@Ozzie88:

"I also removed my SDcard, I read somewhere on XDA Delvelopers that a malfunctioning card can give this issues." It would - to the point that the phone would never finish booting up (when I say never, I mean like if you plugged in the charger and waited for 25 years - the card has a file with a block lined to a previous block, so Media Scan is reading that loop until the sun goes out). Pulling the card out every night is just going to wear the almost non-existent gold plating off the pins.

erm...i stated "with airplane mode off. "

 

[anon(10311036)]

erm...i stated "with airplane mode off. "

hey man, third day testing here.. with airplane mode I have 3% loss overnight. Whitout its about 25% loss. I assume its my weak signal. Thanks for the replys anyway.

 

[anon(10311036)]

The reason a weak signal drains more battery is that if it's weak coming in, it's going to take a higher-powered signal to reach the tower, so the phone goes to high power. But in airplane mode it's not transmitting, so even if there's no signal, it has no effect on battery drain.

@Ozzie88:

"I also removed my SDcard, I read somewhere on XDA Delvelopers that a malfunctioning card can give this issues." It would - to the point that the phone would never finish booting up (when I say never, I mean like if you plugged in the charger and waited for 25 years - the card has a file with a block lined to a previous block, so Media Scan is reading that loop until the sun goes out). Pulling the card out every night is just going to wear the almost non-existent gold plating off the pins.

im not pulling the card out every night, I have the 128gb version, it enough for me. Im using only my internal storage right now. But as I said to Hermes Hidayat, im pretty sure its my poor signal on my room. Since when i use airplane mode overnigth the amount of baterry loss is about 3 or 5%. Im pretty sure removing the sd card doesnt help me in anyway.

 

[Hermes Hidayat]

hey man, third day testing here.. with airplane mode I have 3% loss overnight. Whitout its about 25% loss. I assume its my weak signal. Thanks for the replys anyway.

i knew it.lol.well glad i could help a bit.

 

[krisqz]

hey man, third day testing here.. with airplane mode I have 3% loss overnight. Whitout its about 25% loss. I assume its my weak signal. Thanks for the replys anyway.

In airplane mode with wifi force enabled or without any connection at all?

 

[MrDoh]

My phone loses about 0.5% per hour idling, but I've tuned my settings for that. I'm also a light user, texts, phone calls, some podcasts, etc. Not a gamer, and I pre-download the podcasts on wifi. Also, I don't stream media or music on the internet. If your battery drain is due to low cell signal, which I've definitely experienced, there's a couple of things that you can do for that. I'm on Verizon, for example, and have a Verizon Network Extender that gives me 4-5 bars throughout my house. Without the Network Extender, I get 1-2 bars, low cell signal, and a large battery drain. The other thing that you can do is enable wifi calling, which, again on Verizon, gives me less than 1% per hour battery drain idling.

There are other things that you can do to reduce battery drain, like minimizing auto-fetch, push, sync'ing. Some of that you need to do for basic functionality, but for example I just look at my email occasionally rather than have the phone get it as it arrives. I do sync my calendar and contacts, but that's about it. And turn on "data saver", as well as restricting apps to not use data while they're running in the background, etc. Just went through my settings the other day because my battery drain was creeping up, and got it back down again. Somehow Bixby had gotten turned on again, maybe during one of the security updates, and the Bixby home screen was just abuzz .

If you want to find out if apps are the problem, you can boot into "safe mode", and that disables all apps except the apps that come with the phone. So you can use your phone that way for a while and see how things look. There are also battery monitors that can tell you what your apps are doing, and how much your phone is sleeping. GSAM battery monitor is one of those, but you have to use adb to give it a particular permission to get the most information out of it. Sometimes you can identify what's keeping your phone awake using one of those monitors.

Just some thoughts about what you might do to get your battery usage under control. It can be done, though it might take some work.

 

[anon(10311036)]

In airplane mode with wifi force enabled or without any connection at all?

Without anti connection at all. Haven't tried with wifi force enabled yet. It's been pretty decent 3% overnight.