Questions tagged [battery-life]

Questions about Battery life (how long each charge last) or/and Battery Durability (how long until it needs to be replaced) should use this tag.

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votes
2answers
102 views

Reason of existence of An App named “-5”

I was trying to look at the battery usage of different apps and saw this weird app named "-5" on inspection it takes me to google photos which is weird since why will google photos use its ...
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1answer
1k views

WiFi only working while charging the phone

I am being experiencing this very strange issue in the last couple days. I have a Samsung Galaxy S3 Mini with an (unofficial) build of Cyanogenmod 11. Is has been working fine for the last year with ...
1
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0answers
18 views

Reducing Tx_Power for mobile hotspot - hostapd.conf

I am using rooted Samsung J2 pro with Marshmallow 6.0.1. My mobile hotspot uses a lot of battery. And this battery usage is reported by Android OS process by Smart Manager. I have reduced the tx_power ...
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1answer
52 views

What is the approximate battery discharge rate of Google Pixel 3XL phones when turned off?

I am considering purchasing a new Google Pixel 3XL Android phone, primarily for photography. I don't believe those phones have been manufactured for 2-3 years, so I am concerned about the battery ...
1
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2answers
2k views

Battery Status Indicator Error?

Okay so I have a very interesting story to tell.... Here is what happens... I charge my phone at night, wake up in the morning, pull it off the charger, about 9-10pm it drops to about 15%, which isn'...
1
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0answers
37 views

The powerprofile and systrace outputs are not consistent

I'm generating the PowerProflie file and the Systrace file to get the energy consumption of an Android Application, but I found that the number of cpu cores is different between the two files. I'm ...
1
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1answer
34 views

Why does the Samsung S60 draw so much power?

I've been recording the current draw from my s6 using ampere- the absolute lowest i can get is 100mah (screen at minimum brightness and airplane mode). The highest is around an amp with the screen on. ...
1
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1answer
10k views

Crazy battery drain when Idle(note 5)

I am having issues with battery drain and not sure what to do, my note wil lose about 30% battery overnight(about 7-8 hours) and last night it lost about 50%. At first it said that google app used ...
0
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0answers
35 views

Making LineageOS even more lightweight

How can I minimize the power footprint of my LOS? My device is rooted and I have Termux. There I can run $ su # htop and see that the device is running 83 processes (!). These are the processes ...
0
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0answers
28 views

Is it possible for an Android alarm clock app to not turn on the screen when it rings?

Recently, I asked this question requesting recommendations for an Android alarm clock that does not turn on the screen when it rings on Software Recommendations StackExchange. The reason I do not want ...
0
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2answers
993 views

Why newer android versions drain the battery faster?

I've got an Android phone whose stock Android version is 2.1. I've tried several times to install some custom ROMs (mostly Cyanogenmod based) with Android 2.2 and 2.3. The full charged battery lasts: ...
3
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2answers
1k views

How do I keep CPU off when charging?

When I connect the USB power source, it makes CPU to stay on (even though "Development->Stay awake" is off). When charging from a weak power source if makes battery to drain even faster than is case ...
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0answers
24 views

Does software update decrease device performance? [closed]

I’ve been using an Android tablet for a month, and I’ve just got a notification on an update for my tab for Android 11 or One UI 3 (not sure if they mean the same thing). I’m on Android 10. Based on ...
4
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1answer
1k views

Accessibility turned back off - how to keep it on?

I'm using the app 'Automate', in order for it to work I have to turn it on in Settings/Accessibility: But after a short time I doesn't work anymore and it's back on 'off' again. I think it may have ...
3
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1answer
258 views

Prevent dark mode from activating during battery saver

I just updated my OG Pixel 1 to Android 10. I normally use light mode (not dark mode), but my phone just hit the threshold to turn on battery saver mode, and now it has forced my phone into dark mode. ...
0
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1answer
1k views

What are the ways to increase device Screen On Time?

I have a device with 2500 mAh battery and I usually get around 3hrs+ Screen On Time. Are there ways to gain some more juice...? [I am a rooted user, so any method (root/non-root) are welcomed.]
1
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1answer
2k views

Battery draining fast because of Android System

I'm on a HTC Droid DNA with 4.4.2, not rooted. My battery is going down really fast. When I look in power settings it shows that the main offender is Android System with 92% of power usage. I know ...
1
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0answers
35 views

DNS over internal VPN?

I'm a newbie so, my bad if my question is a non sense to you. I'm currently renting a server where I installed PiHole and PiVPN. PiHole is a DNS sinkhole that I use for blocking add, and the PiVPN ...
2
votes
0answers
51 views

Does turning off cpu cores will actually save power?

My phone is using custom kernel that has cpu hotplug in it. The hotplug name is AutoSMP and it has max cpu (big & little) core that should be online option in it. Currently I'm using 3 + 3 core ...
1
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3answers
6k views

Can I prevent my S6 from reducing brightness at 5% battery?

My Samsung Galaxy S6 with Android 6.0.1 always dims the screen when hitting 5% remaining battery. This is very bad in bright sunlight because the screen gets so dark that it's impossible to use the ...
1
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1answer
4k views

Battery saving - WhatsApp

My WhatsApp messages have been delayed and I believe it is because of the power saving being on. I want to keep it on because my battery drains, but WhatsApp does not seem to be in the unmonitored ...
1
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0answers
28 views

Which wi-fi band uses more battery? [duplicate]

I have an Android device that supports both 2.4 and 5Ghz bands. Also my WiFi router is dual band. I know that 5GHz band supports higher speeds but the difference isn't significant for my connection ...
1
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0answers
36 views

Is it better to charge your battery above 50% or let it go down, technically speaking? [duplicate]

Following up on this question: Is it better, when the battery is at 40% to let it drop (use the phone until it's 30% for example) or to let it charge to 70%? As far as I understand 50% is the "...
-1
votes
1answer
466 views

Does it hurt battery life to not fully charge and disconnect? [duplicate]

If I charge my device and let it charge not fully but say, 60% and disconnect, does that hurt battery life? If so, what are the 'safe' ranges?
0
votes
1answer
2k views

How to debug “wlan_wake kernel wakelock” on an unrooted device?

The question is as short as the title. I've a Samsung Galaxy Note 3 & it has started showing issues where the CPU remains in lowest possible frequency (250Mhz) and it doesn't go to deep sleep. I ...
2
votes
1answer
36 views

Is it possible to keep phone plugged in a powerbank when the battery is worn out?

Is it possible to glue a powerbank to the back of a phone, and keep it plugged in permanently, if the battery has been worn out?
4
votes
1answer
6k views

Get rid of 'battery-low' popup after some delay?

I'm using an Android phone (a Motorola Defy+ running CM9) with OsmAnd as a map solution mounted on my motorcycle (it just shows the map and a gpx-track as a driving hint). It's not connected to a ...
0
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2answers
2k views

Battery Status problem

I recently updated my Note 8.0 Wifi from 4.1.2 to android 4.4.2, and shortly after that rooted it (But kept the stock 4.4.2, NO custom ROMs or anything...). Of course, as I knew, the battery ...
1
vote
1answer
50 views

Should I change the battery of my Samsung A7 (2018)?

My phone shut off completely a few hours ago. It was at 20% and somehow it jumped to 0% and shut off. I didn't know what happened so I just put it to charge. I had this phone for 2 years, if not 3. I'...
1
vote
1answer
164 views

How to check if a new Android phone/tablet has got no factory reset yet?

I would like to buy a factory-new tablet (Galaxy Tab S6) so I would like to check if the device has ever turned on (since the production date) and also how to make sure no factory reset has done yet.
0
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0answers
22 views

My battery life dropped from approximetely 20 hours to less than 15 hours, how to find who is responsible?

My Samsung Galaxy S20 battery lifetime was up to 20 hours per one charge. The I have probably installed some apps, and the time is dropped to less than 15 hours. The phone is clearly warm during the ...
0
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0answers
16 views

Is there a way to “Ignore” an Android phone's battery percentage reading?

Dumb question, but bear with me: I have a Sony Xperia XA1 Ultra (G3223) in my drawer, intact, except with one thing--A glaring battery problem. About half a year ago I made the mistake of using it ...
0
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0answers
21 views

Is it possible to change maximum battery capacity to a lower value?

AccuBattery says my phones battery health capacity is around 80-90%. Android and all other devices naturally keeps charging to 100%, even though it will only be 90% charged. To me, this seems to be ...
10
votes
2answers
4k views

Turn off cellphone (SIM) radio

How do I turn the cellphone (SIM) radio on an Android phone? The radio consumes a lot of power (30-70%), especially when the phone is idle. Sometimes I only need to use other functions (e.g., clock, ...
4
votes
1answer
4k views

Is it possible to force enable the battery saver mode in Android Lollipop?

It is possible to automatically enable battery saver mode in Android 5.0 when the battery hits 5 or 15%. However sometimes it would be nice to enable this mode by hand. e.g. when the battery is still ...
2
votes
2answers
2k views

Understanding Samsung Power Settings

I'm quite confused about Samsung's "App Power Management" page. There seems to be several overlapping settings: Adaptive Battery - Limit battery for apps that you don't use often Put apps to sleep - ...
0
votes
1answer
3k views

Why is my News & Weather app using so much data (and battery)?

I'm running Android 6.0 on an HTC M9. In the last 13 days, my News & Weather app has used 1.37GB of data. In that same period, Google Play Store used 1.22GB. For a few weeks now I have had ...
8
votes
5answers
7k views

Is it possible, that old smartphone becomes slow simply because it is old?

I have 3.5 half year old Samsung / Google Galaxy Nexus i9250. The phone has become so slow after that time, that it is simply being unusable. Launching any application, as simple as Gmail or Calendar ...
3
votes
2answers
8k views

How can I turn off data when my phone's screen is off and only let data come back on once per hour or so to sync apps?

I have been using an app called Doze which turns off data when my phone's screen is off. I'd like to find a way that would turn off data when the screen is off but would turn on data once per hour or ...
26
votes
1answer
6k views

Don't charge the battery but use connected power to run the phone

Answers to this question Is power consumed from battery to run the phone when charging? explain how charging while phone is in use does both - charging the battery and powering the on going activities....
19
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11answers
192k views

Displaying Bluetooth gadget's battery status on the phone

I have a Bluetooth headset (BlueBuds X) which uses a battery. I want to know its battery status directly from the phone. I've looked everywhere and I cannot find a solution that isn't a scam. Is it ...
1
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0answers
26 views

(Xiaomi Mi 9 Lite) Mobile data turns off automatically when screen is off!

I have an issue with Mi 9 Lite, when I lock my phone, mobile data turns off automatically after a short period of time, it will turn on as soon as the screen turn on, I tried to enable "Mobile ...
1
vote
0answers
87 views

Making a device to simulate low battery early

I have device which is used commonly by a layman kin. She does not really understand, why spares the battery if we do not wait until it goes to zero. She thinks, the device needs charge only if it was ...
1
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4answers
12k views

Does greyscale/grayscale mode save battery life?

Simple question but searching I can't find much evidence. I use an LED device (not OLED), would that also make a difference?
2
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2answers
9k views

Is the battery cycle count stored on the battery or the device?

I downloaded an app Phone INFO which shows a number of stats, particularly "Battery Discharge Cycles". I want to know if this number is being retrieved from the battery (i.e. it's just the number of ...
1
vote
1answer
53 views

S10 draining over 10% battery per hour while idling

My phone is less then a year old and I had my Screen replaced by Samsung about 2 months ago.(they also changed the battery and aluminium body).So the battery is almost new. About a week ago something ...
3
votes
4answers
18k views

How long device has been running since last charge?

In Android Lollipop, how do I see how long it has been since the last time I charged the battery? I mean I can get the approximate time by eye-balling the graph shown in Settings -> Battery. But, is ...
2
votes
1answer
5k views

Battery drains when phone is turned off

I have a used Samsung Galaxy S3 Mini GT-I8190. When I shut down the phone the battery still drains. The longer I leave the battery in the shut down phone the more charge it looses. Typically the ...
0
votes
1answer
47 views

What can I do to slow down battery degradation of portable power bank for my Android phone?

I just got Inland USB-A 5,200mAh Power Bank w/ LED Indicators for my android phone. It has a one-year warrantee, which seems to tell that its battery might degrade significantly after one year of ...
13
votes
1answer
13k views

Why would I automatically share usage and diagnostics data?

In my Android settings (Version 6) I have the option to activate "to automatically share usage and diagnostics data". I suppose that this will help certain developpers - and of course Google - by ...

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