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[Q] Battery life

I am a bit concerned about the battery life of the upcoming htc. The first reviews I have read about it on german blogs speak from 12 to 15 hours battery life under medium to heavy usage. Even though, one needs to remain cautious with these numbers as the software is not finalized, I wouldn't expect these to double when final.
The Incredible S has a quite satisfying battery life according to users experience. But the Sensation has a bigger screen, higher resolution, a full load of 3D effects and almost the same battery. I fear the battery life will be insufficient in that case, even though dual core is supposed to consume a little less.
Samsung has built a slightly bigger battery on his GSII and people seem to experience a very good battery life. But Amoled doesn't drain the battery when black is displayed and the whole UI has been designed in black for this purpose. So the Sensation will probably not be able to achieve such an autonomy.
Hopefully it will still go through the day under heavy usage. Otherwise I might gonna settle for incredible s instead.
Has anyone read other numbers somewhere?

eadred said:
I am a bit concerned about the battery life of the upcoming htc. The first reviews I have read about it on german blogs speak from 12 to 15 battery life under medium to heavy usage. Even though, one needs to remain cautious with these numbers as the software is not finalized, I wouldn't expect these to double when final.
The Incredible S has a quite satisfying battery life according to users experience. But the Sensation has a bigger screen, higher resolution, a full load of 3D effects and almost the same battery. I fear the battery life will be insufficient in that case, even though dual core is supposed to consume a little less.
Samsung has built a slightly bigger battery on his GSII and people seem to experience a very good battery life. But Amoled doesn't drain the battery when black is displayed and the whole UI has been designed in black for this purpose. So the Sensation will probably not be able to achieve such an autonomy.
Hopefully it will still go through the day under heavy usage. Otherwise I might gonna settle for incredible s instead.
Has anyone read other numbers somewhere?
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This is how I see it. Multi-core cpu's theoretically are more power efficient. You spread work over both cores, if software is optimized, to allow for less "strain" on the cpu. From what I can tell they are "optimizing" their Sense UI to run on both cores which efficiently manages the amount of power is being used. This now gives you less power draw hence power is saved. The battery isn't as big as some devices, but in my honest opinion I believe you will get a little more than 12-15 but probably won't get up to double that. This is all based off of my own conclusions after reading several articles. I may be wrong and if you need to correct me feel free. =) All I will say is you probably won't have to worry about battery issues.

New battery preservation technique for new OS development

I just thought of this, but since AMOLED screens disable pixels in order to preserve battery life, and since on average my cellphone display consumption accounts for over 50% of battery drainage...
I thought of this...
Why don't include a setting profile that scales down the viewport of the entire android amoled screen to a portion of it? with all DPI it shouldn't become worse, and at least you can do calls with the phone when it should be dead.
It should be an extreme measure ofcourse, but could help.

Hnmm how to do that???

yes but how to do it?

Best battery Saver

Idk if this goes in Q/A or not I never had a Q/A section as I came from the amaze but anyway. What battery savers do you guys find best? I Use Batter Defender but doesn't seem to really extend it. Would i be better of not using one at all?

I use 3 programs to help me maximize my battery life.
1) Badass Battery Monitor to figure out what's sucking juice, how long I've left, and how long until I'm full.
2) 2x Battery to manage background data. This probably saves me the most battery by disabling that data transfer a lot of the time.
3) Lux Auto Brightness to tweak my screen brightness. It's pretty much on "dark" now all the time aside for when I'm in really bright light.

JuiceDefender
I use the free version and it's very good!

I think the most effective battery saver is to flash a kernel that has become voltage control features and undervolt the cpu.
Sent using Tapatalk

klin1344 said:
I think the most effective battery saver is to flash a kernel that has become voltage control features and undervolt the cpu.
Sent using Tapatalk
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I'm not a fan of under volting the CPU. Mainly because if my understanding of Ohms Law is correct, it's pointless. And my personal experience with it seems to corroborate my feelings.
Under volting the CPU in my experience just introduces stability and reliability issues. I've personally never seen any battery savings from it, especially since the CPU should, theoretically, just draw more current (I) to compensate for the lower voltage (E). It's watts (P = ExI) that matter, and the CPU, if I understand correctly, is going to demand the necessary P for the frequency requested. So under volting either starves the CPU (it can't get enough P), or over currents it (it draws more I to compensate for less E). There are slight variations in each CPU, obviously, which may allow for a margin of under volting to be possible without issue, but the battery savings of this, I feel, are so small, any you notice are most likely a placebo effect. Your screen, and apps constantly polling the CPU or network are your biggest source of battery drain to worry about IMHO.
Sent from my H1S using XDA Premium.

I use Power Controls widget.
Unless I'm actively using internet, I make sure to turn 4G data to 2G. That alone saves so much battery. If I want further battery saved, I disable internet completely with a touch of a widget. Now my phone will last a week just by what phones do best: Making phonecalls and texting.

I'm on 2.1 GHz overclock processor and when battery goes below 30% it goes to 1ghz I can see the battery being saved
Sent from my HTC One S using xda premium

k1llacanon said:
I'm on 2.1 GHz overclock processor and when battery goes below 30% it goes to 1ghz I can see the battery being saved
Sent from my HTC One S using xda premium
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With an higher frequency the phone will use more power, like a pc processor when you overclock it so this is natural, but overclocking/downclocking has nothing to do with undervolting, MadJoe is right.
With JuiceDefender for example you can set your 3g/4g to shut off when you don't use the phone, it activates 3g/4g when you use your phone and at regular intervals in backgroud so it can fetch emails etc.
All automatic so you don't have to switch off and back on network connection every time.
As network connection is one of the services that consumes the battery a lot this is really effective and really improves battery life!

I've read a lot of complaints about these PowerManagement Apps using more battery life then they safe.
I don't know if this is right.
At the moment I'm running CM9 with modified auto-brightness options, auto-sync and 2G/3G/WIFI always on.
I'm really happy with the battery life I get, so I don't see why you would need a Battery Saver app with this phone.

rickyoon.vegas said:
I use Power Controls widget.
Unless I'm actively using internet, I make sure to turn 4G data to 2G. That alone saves so much battery. If I want further battery saved, I disable internet completely with a touch of a widget. Now my phone will last a week just by what phones do best: Making phonecalls and texting.
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Heh, so why did you get a smart phone. Some older nokia's that can only talk and text can last for weeks on one charge, if you want a model # I can look it up 4 u.

Do Android smart phones wear out?

EDIT: I did manage to find a couple of good sources that I've given below.
I've been using Galaxy s7 exynos for a long time now. I recently had the battery replaced because it had gone to about 50% of its original battery and that got me wondering, does the physical phone itself wear out? Do the chips degrade over time, does the RAM start going bad, that kind of thing. I've rooted and have used factory reset and custom ROMs along the way, so what I'm looking for is information completely apart from the fact that software concerns can slow a phone down and make most owners think their phone is getting old and wearing out. Also I realize that as time goes on and hardware gets better that sometimes apps will outstrip a phone's original abilities but I'm not talking about that either. I've done some googling and mostly what I find is articles talking about "my phone is old now (because better phones with better hardware are now available)" and "if your phone slows down just do a factory reset".

After more googling, I found this information on Quora at https://www.quora.com/Do-smartphone-chips-wear-out-over-time, by Valerie Cietto. This may help someone else with the same question :
Yes, but very slowly. Flash memory has a limited number of writes, usually in the order of 10^5 to 10^9. After that number of changes it become as read only, but it doesn't fail all at once, just some byte at once. Then that sector is marked as bad, backed up and ignored, so the memory still works, with a small reduction in capacity.
Newest flash memory file systems even do wear leveling, so writes are scattered over the whole memory, so that the memory lasts more.
Flash memory also have a definite lifespan due to electromagnetic noise and other kind of radiations. While this is a serious issue on space or other planets, memories on Earth are expected to last at least 20years.
Speakers and microphones wear down due to dust, humidity and loss of magnetic charge. Expect to need to change them after 20-50 years.
Camera sensors degrade due to light radiation. Hardware corrections automatically hide dead pixels. Unless you love to make timelapses of sun every day, this should not concern you. And even if you do you have noticeable effects only if you get raw images.
LCD has a definite lifespan before showing dead pixels. LCD TVs are rated for 4-10 years before some key component, but common faults for LCD TVs are not the screen or the pixels, but motherboard or power supply. Smartphone LCD should last much more, in part because they don't need electrolytic capacitors, and are lower powered. Some reviewer has pointed out that pixels lower brightness year after year, with noticeable effects on always on devices. The too dim to read thresold may be crossed after 10 years of normal use.
Also CPU degrades over time, but not with a noticeable effect unless you benchmark them. The main cause is the clock, that drifts over time.
Processors have negligible wear due to use, and lower the power is, lesser the stress on the circuit is.
Underclocking may extend the lifespan of the CPU, but it's more useful to save battery, rather than making the phone last more.
Overclocking, high temperature or voltage spikes can damage CPU. Once the processor is burnt, is gone, and must be replaced. Unfortunately just changing the CPU block is not feasible without damaging other parts.
CPU and RAM are on the same chip or soldered together in most smartphones, so if CPU burns you need to replace the whole motherboard.
RAM degrades like flash memory. When a bad sector of RAM is found it is marked as bad from the memory processor and ignored. On small RAM system a bad RAM read can cause an application to crash unexpectedly.
WiFi, GSM, GPS, Bluetooth radios are rated for 10 years of operation, but can last probably more. The failing cause is the driver IC, which includes a microprocessor and flash memory. Newest phones are highly integrated, so that IC could be bundled inside together with CPU, RAM and Flash.
Motherboard solder joints may break due to shocks or bending.
Battery of course is the component which degrades faster.
As an holistic analysis, most phones go out of service when they can warrant other 5-10 years of use. And even "broken" phones will live again with some inexpensive replacement. All components except motherboard and connectors fail gracefully, as they slowly degrade in performance, instead of stopping to work at all suddenly, so the phone ages well if it doesn't receive shocks, immersions,too much heat, massive radiation or fine dust.
Don't worry to use the phone in daily use, other technologies have more weak points.
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And this article seems pretty well written to explain the software / OS reasons why a phone seems to perform less well over time:
https://lifehacker.com/why-your-smartphone-seems-to-slow-down-as-it-ages-1798440451

Question about heat issue and screen dim

hey guys !
iv got real issue with the flip 4 , i like the brightness to be full and also the extra brightness
but every min that i just do simple stuff like open face book or just playing few sec with the phone my phone begin to warm in the upper side
and the screen dim much , but i only do stuff like few second so whats the point of the brightness
im at home and its not hot in my room.
maybe its defect of the screen or its like that ? cause when i hade s 22 ultra it also dim screen when get warm and the iphone also dim the screen when become hot but in the flip 4 i just do simple stuff and the screen dim then even the brigthness slider when i play with it is not function wtf? can you help me thx

Why are you burning up your retinas? Dim light isn't harmful to your eyes but bright light can be.
There absolutely no reason to use full brightness indoors all the time.
Moreover full brightness greatly reduces battery run time, lifespan as well as display lifespan.
It's best practice to not use these devices in direct sunlight... it will rag them out.
If you're hitting the thermal limits of the device and its battery or cpu core temps are too high ie the device is operating within normal parameters as opposed to a defective thermal sensor all you can do is reduce the load.
By turning down display brightness, reducing bandwidth usage and better optimizing the device to reduce power consumption. What's it's average mAh usage? SOT?
Heat is the inevitable byproduct of power consumption; reduce power consumption to reduce the heat.

blackhawk said:
Why are you burning up your retinas? Dim light isn't harmful to your eyes but bright light can be.
There absolutely no reason to use full brightness indoors all the time.
Moreover full brightness greatly reduces battery run time, lifespan as well as display lifespan.
It's best practice to not use these devices in direct sunlight... it will rag them out.
If you're hitting the thermal limits of the device and its battery or cpu core temps are too high ie the device is operating within normal parameters as opposed to a defective thermal sensor all you can do is reduce the load.
By turning down display brightness, reducing bandwidth usage and better optimizing the device to reduce power consumption. What's it's average mAh usage? SOT?
Heat is the inevitable byproduct of power consumption; reduce power consumption to reduce the heat.
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Click to collapse
man loll i just say i play with facebook whatsapp for just around 2 min and the screen dim all you sayed got nothing to do with it , i see better with max brightness thats why they made it so??? its not possible that after 2 min the screen will dim the phone is new from today and i dont have nothing on it so this strange

nosferatu123 said:
man loll i just say i play with facebook whatsapp for just around 2 min and the screen dim all you sayed got nothing to do with it , i see better with max brightness thats why they made it so??? its not possible that after 2 min the screen will dim the phone is new from today and i dont have nothing on it so this strange
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Is it just those 2 social media apps doing this?
I don't allow any social media or shopping apps on my phones. Trashware at best, spyware and/or malware at worst.

Just general use outside/car mine gets pretty warm and screen dims. Compared to my S22 Ultra it rarely dimmed but also a bigger phone

You likely know this but it bears repeating:
The processor and other circuits are mostly on the upper-half of the phone, near the camera. These chips do get warm, even hot, when applications are in use.
A lithium ion batter, when being charged or discharged, gets warm, even hot, depending the current flow needed to operate the applications, chips, and screen.
An OLED display can get warm, even hot, when lit brightly.
An OLED screen in sunlight will get warm, even hot, even if powered off, because it appears black.
Outside, if the OLED is bright white, it still gets hot because turning on all the pixels takes power, which is expressed as photos (light) and heat.
A very compact phone, like the Flip, has little surface area to expel heat. It doesn't have a fan, so the only way the phone cools is by convection (passing heat to the surrounding air) or transferring heat to your hand or (don't try this) water.
A folded Flip has about one-half the area to dispel heat because the screen cannot effectively radiate heat to the air or your hand.
Some applications use a lot of processing power even if you think you're using them. This is why so many people on this site discuss removing and/or disabling applications.
You can check in Settings --> Battery and Device Care --> tap on Battery --> tap on the graph, and the phone will display which applications are using the batter.
It's my understanding that the processor, battery and screen all have "checks" to ensure they don't get too hot, and Android can throttle these components to prevent wearing them out, burning them out, or causing a fire.
Hopefully others will better understand some of the challenges Samsung has in creating such a unique phone.

wpscully said:
You likely know this but it bears repeating:
The processor and other circuits are mostly on the upper-half of the phone, near the camera. These chips do get warm, even hot, when applications are in use.
A lithium ion batter, when being charged or discharged, gets warm, even hot, depending the current flow needed to operate the applications, chips, and screen.
An OLED display can get warm, even hot, when lit brightly.
An OLED screen in sunlight will get warm, even hot, even if powered off, because it appears black.
Outside, if the OLED is bright white, it still gets hot because turning on all the pixels takes power, which is expressed as photos (light) and heat.
A very compact phone, like the Flip, has little surface area to expel heat. It doesn't have a fan, so the only way the phone cools is by convection (passing heat to the surrounding air) or transferring heat to your hand or (don't try this) water.
A folded Flip has about one-half the area to dispel heat because the screen cannot effectively radiate heat to the air or your hand.
Some applications use a lot of processing power even if you think you're using them. This is why so many people on this site discuss removing and/or disabling applications.
You can check in Settings --> Battery and Device Care --> tap on Battery --> tap on the graph, and the phone will display which applications are using the batter.
It's my understanding that the processor, battery and screen all have "checks" to ensure they don't get too hot, and Android can throttle these components to prevent wearing them out, burning them out, or causing a fire.
Hopefully others will better understand some of the challenges Samsung has in creating such a unique phone.
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thx for your great reply

hyelton said:
Just general use outside/car mine gets pretty warm and screen dims. Compared to my S22 Ultra it rarely dimmed but also a bigger phone
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Click to collapse
My flip4 is up and running and no negatives so far. Just slightly warm while I was downloading over wi-fi some 15GB of my music. The overall quality of this phone is pretty good, just like my S22, but it folds to 1/2 of S22 in size. Spent several hrs setting it up and debloating, I always do these things manually. This phone is very responsive and operates smoothly.
On the side note: picking up the delivery from Bestbuy, rather than getting it to my door by Fedex, wasn't a good idea - now I have to look somewhere for an mt box for packing up and shipping my trade-in, Bestbuy just handed to me two small retail packages w/ the phone and silicone cover. They don't handle trade ins.