Having problems with your flash? - Desire HD General

I noticed that quite some people have problems with the flashLEDs on their DHD's. The common problem is that when you want to take a picture with flash on, the phone reboots and the picture isn't saved. I have had the same problem for some time too.
But guess what? I ordered a new battery and it arrived today. I did some testing and my conclusion is:
With the old battery the phone reboots when trying to take a picture in the dark, but with the new battery it works just fine!
I am 100% sure that the problem is battery-related.
I think that the battery of the DHD isn't of very high quality, and after a year or longer it just can't handle it any more. It could also be related to heat-exposure of the battery.
So anyone experiencing this problem: if you want to get rid of it, buy a new battery! It has some other benefits: much longer battery life and your phone doesn't get that warm any more.
I got mine for 12 euros from eBay.
just thought this might be handy for some people.

Related

is it... the battery?!?!

I'm at a loss.
A week ago, phone started random resets and looping resets - usually when using a significant resource (i.e. camera, web).
I removed everything, reflashed rom, reflashed the Cingular rom etc. to no avail - same problem.
Today, I'm running the bare bones cingular rom without add ons. Seems like I'm doing fine - battery down to about 88% at 5pm which seems okay (I push mail from the exchange server). I take a picture with the camera and go to send it via email and the phone starts looping resets. I soft reset and I get a low battery message - 12%. I went from 88% to 12% in about two minutes.
Any expert opinions? Is it just the battery or is my phone turning into a brick?
Thank in advance.
Sincerely,
Jonathan
First off how old is the phone? It could be time to get a NEW battery.. these batteries have shelf lifes.. lol.. there days are numbered.
Phone is about 1.5 years old.
Update:
Interesting update:
Powered the phone off to pull the battery and check it out as I am looking for a new battery on ebay.
When I power the phone up, it now says battery is at 67%
- this makes me concerned that there is a hardware problem with the power management system in the phone...
thoughts?
"bump"
Any help, all. I would really appreciate your insight.
I'd start by buying a new battery. 1.5 years is a long time for a rechargable battery.
I am having the EXACT same problem.
I even bought an OEM Sanyo on eBay. No change. Then, I complained to Cingular and they replaced the phone (it took a LOT of complaining).
I put the new battery in the new phone, totally vanilla install. It worked great for a couple of hours, then the problems started happening again.
WTF? New phone, new battery and it's still happening.
Yeah - probably no way any level of complaining is going to score me a new phone from Cingular because of the age. I have a new battery on the way, but I am worried that it might be something with the charging circuit or something. Wish somebody with some expertise would speak up on this...
If you are lucky: they sell extended batteries on eBay. I bought me one for my TMO USA VARIO. The stand-by times are really amazing!
In case you consider to buy an extended one make sure that it comes with the battery door as pictured at the link below!
In general the prices on eBay are very low, so, if you are planning to keep your phone a bit longer you might want to buy 2 or 3 batteries at once? (Saves shipping and I really expect that the batteries will soon not be available any longer since the WIZ is discontinued.)
Link to eBay item:
http://cgi.ebay.com/For-Cingular-81...ryZ15034QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
I had this problem. Looping reboots, might work for 5 minutes but then a constant cycle of reboots. Mine is a years and 2 months old.
I though it was the phone and was ready to ditch it. The battery showed a good charge.
I bought a OEM battery off of eBay for 10 bucks and the phone has not had one issue since.
No question it was the battery in my case.
Excellent. Thanks for the response. New battery was purchased last week and should be here soon, so I'll let you know how that turns out.
Might also take a look at the extended battery - seems like a neat feature, although it looks like it would keep the phone from fitting in my car stand (I use tomtom with it).
I'll post a reply when I find out if it is indeed the battery.
Thanks again.
Its a battery issue.
I had this problem before.
I would charge my phone using some 3rd party cradle and some how it screws my battery up.
for exmaple. The phone would say the battery is fully charged. but when i use it. the phone only lasts 5 mins.
after awhile. not matter how i charge the battery the battery never went to it's full charge. and like you, it keeps looping.
this was an OEM battery that i had for less then a year.
i got a random cheap battery off ebay to test it. and now it works fine.
i threw out the old battery.
UPSATE
UPDATE: It was..... the battery. Easy OEM replacement off ebay for less than 5 bucks. Running like a champ again. Thanks for the insight. Hopefully this helps someone else in the future.
Cheers!
- JB

Universal suddenly shuts down; battery or other problem?

I recently acquired a HTC Universal for dirt cheap, and have found the first problem to explain the low price: Whenever I'm using a "power-hungry" application (TCPMP, Internet via Wi-Fi) it eventually just blacks out. Full shutdown without warning.
When trying to reactivate the unit, it reboots as if after a soft reset.
In fact, if I try to reactivate it too quickly, even the reboot fails.
None of the above happens when on external power.
This leads me to think that it's nothing worse than a battery that's lost its mojo, but since there is no warning about low battery, and when the reboot finishes successfully even SPB says the battery is somewhere around 70%, I want to run this by you guys.
What do you think? Just go get a new battery, or is there something else going on which will make buying a new battery just a waste of money?
I'd say it's the battery, 99% sure.
I'ts gotten old and its voltage breaks down under load. If you have proper equipment and a glimpse of an idea what you're doing you should drain about 300mA from the battery and measure its output voltage.
You'll most likely see it going below 3.0V quickly.
I'm afraid I don't have that equipment, but all I really needed to hear was that it's probably the battery.
Now I can stop thinking about it and just order a new batery.
Unexpected reboot - Apparently bettery issue
Hey Holybear, my device shows exactly same symptom, If possible let us know if bat replacement solved the issue>
Holy Bear said:
I recently acquired a HTC Universal for dirt cheap, and have found the first problem to explain the low price: Whenever I'm using a "power-hungry" application (TCPMP, Internet via Wi-Fi) it eventually just blacks out. Full shutdown without warning.
When trying to reactivate the unit, it reboots as if after a soft reset.
In fact, if I try to reactivate it too quickly, even the reboot fails.
None of the above happens when on external power.
This leads me to think that it's nothing worse than a battery that's lost its mojo, but since there is no warning about low battery, and when the reboot finishes successfully even SPB says the battery is somewhere around 70%, I want to run this by you guys.
What do you think? Just go get a new battery, or is there something else going on which will make buying a new battery just a waste of money?
Click to expand...
Click to collapse
I knew I wasn't the only one withthat problem. I think i've prooved it to be a battery faultt. as if you taake te battery out after it gets to that stage where you just can not get it too complete a boot up without it shuttinng down again
take out battery ,place finer oveer all battery trmminals and plug inn your mainss charger it should now boot up and runn fin off the charger unless your finger slips off the battery terminals. thisshsowws it's the temprature sensor in the battery.
I posted a more in depth reply to a guy in the wm6 threads as wifi heeaating up battery wass shutting off his device as well
@ cyberjak
Hmm, the idea that a temperature sensor in the battery causes this problems is interesting. I'd just expect the device not being cappable of rebooting instantly, because there should be a hysteresis implemented in the battery's protection circuit.
I had the exact same problems and described them elsewhere, but in my case it surely wasn't an issue of temperature.
I'd suggest to take out the battery and wait about an hour for the device and the battery to cool off. Most likely the battery will then take a complete boot but shut down soon after that - without having gotten near to "warm" yet.
If this happens you can be sure that the battery itself is dead without needing to measure anything.
Okay, to tell you what I tried:
I ran the Universal until it spontaneously went dead.
Started bootlaoder to see how much longer it would work on that. Was a bit longer, what with low energy consumption, but soon even that wouldn't stay on for long.
Then decided to try the "old wives' tale" (meaning I don't know whether there's any sense behind it or not) of putting the battery in the freezer for a little while.
When I took it out and let it get back to normal temp, I plugged it in and after a while booted the Universal. It showed 40% battery, lower than it had ever gotten lately.
Recharged for a full day.
Tried TCPMP: went dead after three minutes.
So in my experience the above didn't help battery performance.
Am going to get a new battery in a few days; I'll keep you posted on progress as I try with a fresh battery.
I had the same problem, whenever i did something cpu intensive, it would just black out.
I just bought a new 3100mAh battery. Best thing i ever did. It might be thicker now with the new battery, but it actually feels more comfortable as a phone. Plus the new battery only cost 13 odd quid, so definately well worth it. Oh and it doubles the battery life (3100/1500 = ~2... duh)
Hope that helps.
oh you know wat i have the same problem with my Jasjar and the bigest problem that there is no batteries on market for Jasjars in my country....its looks like im living in Jurassic Century!!!
If you want i can send you a battery xplayer, they're quite cheap here.
Rc-Blob said:
I had the same problem, whenever i did something cpu intensive, it would just black out.
I just bought a new 3100mAh battery. Best thing i ever did. It might be thicker now with the new battery, but it actually feels more comfortable as a phone. Plus the new battery only cost 13 odd quid, so definately well worth it. Oh and it doubles the battery life (3100/1500 = ~2... duh)
Hope that helps.
Click to expand...
Click to collapse
I ordered a regular battery replacement, but maybe I'll add a 3100mAh as well.
I could use it as a media player during long train trips.
Holy Bear said:
Okay, to tell you what I tried:
I ran the Universal until it spontaneously went dead.
Started bootlaoder to see how much longer it would work on that. Was a bit longer, what with low energy consumption, but soon even that wouldn't stay on for long.
Then decided to try the "old wives' tale" (meaning I don't know whether there's any sense behind it or not) of putting the battery in the freezer for a little while.
When I took it out and let it get back to normal temp, I plugged it in and after a while booted the Universal. It showed 40% battery, lower than it had ever gotten lately.
Recharged for a full day.
Click to expand...
Click to collapse
I revived two batteries by intense cycling to work quite well again. They still black out at 20%, but only under extreme load (active gsm connection, active wifi, bluetooth and having to render a webpage).
But you should be able to discharge them below 25% at least. Else they're most certainly "too dead" already. And you should do at least 3-4 cycles.
My guess would be that the freezer finished your battery off. I don't understand how this method should work anyway, as lower temperatures reduce the time affected capacity loss. Actually the best place to store a LiPo or LIo battery is the fridge, charged about half the way.
But I also ordered two 3100mAh batteries. I'm using the Uni as a laptop replacement and the permanent wifi usage together with some cpu load and the backlight kicks the battery's ass quite hard.
In Germany the China 3100mAhs are overpriced and it's hard to get your hands on an external charger, but on Ebay.co.uk there's a seller that offers battery and charger as a bundle for about 15€. This will give me a solid 6000+mAh per day and should be enough to forget about virtually every setting related to power consumption
@ xplayer
If you haven't donw already, take a look at Ebay.com, co.uk etc and look if one of the sellers there will ship to kurdistan. You may be lucky
Rc-Blob said:
If you want i can send you a battery xplayer, they're quite cheap here.
Click to expand...
Click to collapse
Oh Thanx Rc-Blob....bt there is No way even to send me no addresses no posting in my country...am from kurdistan of Iraq...thanks again its looks like u sent me one...bt I even have brother in USA he can't send me...except if some one come from there so i have to wait...thanks buddy...
EvilJogga said:
I revived two batteries by intense cycling to work quite well again. They still black out at 20%, but only under extreme load (active gsm connection, active wifi, bluetooth and having to render a webpage).
But you should be able to discharge them below 25% at least. Else they're most certainly "too dead" already. And you should do at least 3-4 cycles.
My guess would be that the freezer finished your battery off. I don't understand how this method should work anyway, as lower temperatures reduce the time affected capacity loss. Actually the best place to store a LiPo or LIo battery is the fridge, charged about half the way.
But I also ordered two 3100mAh batteries. I'm using the Uni as a laptop replacement and the permanent wifi usage together with some cpu load and the backlight kicks the battery's ass quite hard.
In Germany the China 3100mAhs are overpriced and it's hard to get your hands on an external charger, but on Ebay.co.uk there's a seller that offers battery and charger as a bundle for about 15€. This will give me a solid 6000+mAh per day and should be enough to forget about virtually every setting related to power consumption
@ xplayer
If you haven't donw already, take a look at Ebay.com, co.uk etc and look if one of the sellers there will ship to kurdistan. You may be lucky
Click to expand...
Click to collapse
hhh ok buddy you too for care....but there is realy no way i have to wait tell some one(my brothers friend) come from USA so he can get me one from there....its ok...i can use it yet as a normal mobile...i have some other devices for multimedia right now i can wait there is no any other ways....thanks...
Rc-Blob said:
If you want i can send you a battery xplayer, they're quite cheap here.
Click to expand...
Click to collapse
Thanx for helping the guy,yo folks on xda are the best
Just to give you all the end of the story:
I ordered a regular replacement and a 3200 mAh one, and both have returned my Universal to a well-used life.
Thanks again to everyone helping me out here.
For you guys does the device switch off only when the battery is low, or any time. Cause I have this problem as well, and I was SURE that it wasn't a battery problem until I read this thread. The phone switches off intermittently, sometimes after only 3' talk time right after it had been charging for a full 8 hours! Also, usually if I let it sit there for a few hours I could then turn it back on and it would last a full day, so I knew it wasn't due to low battery.
The overheating theory would explain my problem, as, now that I think about it, all my seemingly-random shutdowns were during radio activity (making or receiving calls, especially when the phone was searching for signal, or wifi, which would almost instantly kill it). Strange that it overheats like this, most phone batteries simply run out of charge faster and faster until they can't hold a charge at all, but mine lasts almost as long as it always lasted even though it's 2 years old - unless I get the shutdown thing of course.
I asked this in another thread, but since this one is full of people who got replacement batteries I'll repeat my question here as well:
How much thicker than the standard battery are the 3100 and the 4200mAh ones?
I also got this problem recently, so I bought a new battery and although it's only a 1600mAh battery it runs great again
hey roodkapje ive got that same problem with my battery for my spv m5000 the bad news is that i cant get that batery in barbados so im all out to see

Suggest a replacement battery?

Hi, my gf just upgraded to a blackberry and I got the hand me down. So far I really like this phone, I upgraded to WM6.1. But she used this phone for over a year. Its really beat up, but functions fine. The batter though is pretty weak now. After a full charge I can barely use it without the battery going dead. I get maybe 1 hr talk time.
can anyone recommend a good battery, not extended? The ones i've seen look ok, but I'm not sure about them.

random hardware issues? your battery might be going bad!

Hi everyone!
(TL;DR: i had hardware issues - overheating, slow mobile data, crappy battery life on 3G, non-responsiveness, etc. - that all got solved by replacing the battery for a new one)
I've been a faithful N1 user (briefly went to the nexus S, but came back) since april 2010, and my nexus one has been great ever since i got it.
A few months ago, I started having random hardware issues: first my camera led wouldn't turn on, then the speaker and vibrating motor went bad (I replaced all three parts with spares from ebay), and while i thought everything was repaired, I started having serious battery life and other random issues i couldn't really diagnose.
My phone would overheat after around 5 minutes with the screen on (i.e. while reading the morning news), 3G data was spotty and very slow, and the phone would sometimes be unresponsive for brief amounts of time. Also, my battery life dropped from lasting the whole day, to not even reaching 3PM. I managed to solve most of the issues by going 2G only - after all, I said, it's been almost 2 years and the phone was bound to go bad some time - however, the phone never really felt stable again.
In the meantime, I bought an OEM battery and a replacement digitizer (my battery stats blamed the screen for like 90% of battery consumption, so I guessed there was some sort of electric short on the digitizer or lcd, and the battery calibration app said my battery was only 84% fit), so I guessed I could try one last round of repairs before declaring my N1 retired. I even bought a Sensation in preparation to that sad moment.
Long story short, I swapped batteries 2 days ago and all my issues disappeared as if it was magic. Now I'm at 60% battery, with 3G on all day, and it's been 13 hours on, yesterday was similar. The phone has never overheated again since the battery replacement, and has been as responsive as I can remember, and mobile data has been somewhat faster (I blame my carrier for sucky speeds).
So, if you are experiencing weird hardware issues like mine, sudden changes in behaviour or just plain sucky battery life, it might mean it's time to get a replacement!! my battery lasted for about 2 years, and that's a very very good run.
Also, a bad battery was most probably the cause of the other components going bad, since i guess it didn't provide a stable supply of power.
Now I'm in love with my N1 again, and don't know what I'm gonna do with the Sensation I bought in desperation!!
Just sharing my story, maybe it can help somebody get their N1 back on full working condition.
Soooo agree!
I recently got my Nexus from my Dad. He blamed it for many things, included sudden reboot and overheating. I tried a bunch of GB roms, even stock (on which I even can't boot in with SIM on) and then I thought of the battery's fault.
As I can't find an OEM one, I just pick a new chinese battery, a SCUD 1420, the brand is kinda well-known as a decent battery replacement in town. Well, the battery life isn't that good, but now my phone hasn't reboot since then. Especially now when I run ICS, very smooth for an old N1
Still, could you tell me where did you get your battery please? I'm looking for an OEM that has better battery life.
Viva el N1
I bought from this seller on ebay. At least my unit looks ok (not exactly like the original battery that came with the phone, but very close).
it's also quite cheap, considering it revived my phone.
http://www.ebay.com/itm/33046584691...X:IT&_trksid=p3984.m1439.l2649#ht_1849wt_1189
mine gets a little overheat (debug mode even shows "overheating") when charging the original battery.
and since it was new, the touchscreen does not work if the screen is on for a long time while charging.
just got a new 3.2A/H battery, it haven't solved the touch screen the slightest
still not showing overheating though... but the original one showed even when it was new.

Where's my battery going?! (Phone won't sleep?!)

HELP!!!
I picked up an H918 for my wife to use on T-mobile USA. Since it was used, I also got one of the extended life 4100Mah batteries to hopefully make it last at least the entire day without topping off the charge. She usually averages around 4 - 5 hour SOT, so this seemed like a good option from what I've read, and fits in the original door so I can use the wallet case she wants with it.
But man, her battery life is TERRIBLE! I checked with Accubattery, and it reports that the battery is charging within 99% of it's 4100mah spec, so I don't think its a bad battery. Yet, she can barely go 12 hours with just under 2 hours SOT before the phone dies!
She is unrooted, running stock Oreo.
I installed GSam Battery Monitor and used their ADB commands to give it permission to record deep statistics w/out root (pretty cool, never did that before). I ran it for a little while this morning. Within 3 hours 40 minutes off the charger, she was already down to 72% with barely any SOT. I'm attaching screenshots of the app usage and doze screen (sorry for the phone-snapped-of-phone picture, it's my wifes phone like I said, so it was easier to just snap with my camera than take a screenshot and send it to myself to post).
Maybe I'm not reading this right, but it seems like something is keeping her phone from sleeping. A big culprit seems to be call services, and in my location settings, I noticed it mention that LG IMS was doing a lot of heavy battery drain with location related inquiries.
I thought maybe it was related to WiFi calling, so I turned that off. Cell reception is average.
2 hours later, she's down to 50% so that wasn't it. I don't know what else to try other than hard reset, but we literally just got this and set it up 2 days ago, and its been like this from day one. I don't see why it would be any different the second time around.
It's likely a junk battery. It's really hard to get a good oem replacement battery.
If you shop Amazon look for a Taeozi 4200 or Shemnz 4200. They both have 2 year warranty and decent reviews here on XDA
The Perfine 4100 is also highly recommend
Any Li-polymer should be better
Sent from my ONEPLUS A6010 using Tapatalk
When I bought my wife's phone it had a battery drain/overheat and wakelock issue as well. I fixed it and haven't had an issue since. Here's what I did to fix it:
https://forum.xda-developers.com/v20/help/absolutely-terrible-battery-life-t3531456/post78654160
clsA said:
It's likely a junk battery. It's really hard to get a good oem replacement battery.
If you shop Amazon look for a Taeozi 4200 or Shemnz 4200. They both have 2 year warranty and decent reviews here on XDA
The Perfine 4100 is also highly recommend
Any Li-polymer should be better
Sent from my ONEPLUS A6010 using Tapatalk
Click to expand...
Click to collapse
I did my homework first and got the Perfine from Amazon, not a no-name junk battery. When I couldn't fit it without removing the sticker, the seller was really helpful and actually offered to replace it after checking first that it fit in *THEIR* V20 at the factory. Really solid customer support. And according to Accubattery, it really is the capacity it says. Or at least within 99% of it (I think it estimated 4080 or something like that). So I don't think that's the issue.
pistacios said:
When I bought my wife's phone it had a battery drain/overheat and wakelock issue as well. I fixed it and haven't had an issue since. Here's what I did to fix it:
https://forum.xda-developers.com/v20/help/absolutely-terrible-battery-life-t3531456/post78654160
Click to expand...
Click to collapse
That's actually really interesting- I did take apart the phone to do the thermal mod thing (wiped off the dried up pink gunk and put a thermal pad there), but it seemed pretty clean otherwise inside when I did. How on earth did you figure out that was the problem?
After speaking with some folks on Telegram, Reddit, and other corners of the internet, I have a different theory. A bunch of people told me to let the rom "settle", that battery life is never good after a fresh format or new rom flash. Honestly, the critical thinker in me says that sounds like nonsense. I've never heard of this before and I've been flashing roms for the better half of a decade. I'd think after it takes the time the load up your apps and settings and configure itself, it would be done. But I Googled it, and it seems to be a hotly debated subject.
Those that swear by it claim that whenever you start fresh or flash a new rom, it takes anywhere from one to a few battery cycles before the kernel calms down. Perhaps it is doing some sort of internal calibration based on your battery life and system demands or something like that. The theory seems to be that the Kernel doesn't allow the CPU to fully doze until it is done with this process, which sometimes takes days. I don't know, but the more I read about it, the more it sort of started sound plausible. When I got the phone, I tried out some things on it myself without a SIM card first, just to make sure everything on it checked out before giving it to the wife. Then, I did a hard reset, popped in her SIM card and let it do its thing. That's when we realized battery life was pretty terrible, as after 10-12 hours she already needed to charge... and this was on the 4100mah perfine!
I tried another hard reset, and when that didn't fix it, I decided it was time to root and see if I could get to the bottom of the bad battery. It seemed the kernel was where a lot of it currently went according to battery stat apps. After downgrading my H918 to Nougat so I could install TWRP, I promptly flashed Alpha Omega Oreo 20H and restored her apps. Turns out the next morning we couldn't sync her smartwatch, somehow we broke bluetooth (going into BT settings would crash the phone everytime). So weird, and while we were at it the battery life still wasn't great. So I did a hard reset that evening and found that even with nothing installed, BT was borked. (looking back at it, I think I should have flashed an Oreo rom like the stock 20H rooted first, and THEN the AO rom. I think going straight from nougat might have led to a driver mismatch or something)
Anyway, after that didn't work I flashed the stock rooted 20H rom, and lo and behold bluetooth and everything else is working again! But the battery has been bad all along and is still doing its generally suckiness thing.
BUT... as someone pointed out, if this kernel settle thing is real, I've been pretty much flashing and resetting this thing every other day. If roms need to "settle" first (still a debatable subject), than I never really gave it a chance yet and that's why I'm constantly seeing battery drain from things like Kernel even on different roms! And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
All I know is I'm going to give this a couple of days before deciding on a plan B. Seems too simple to be the reason, but hey- I'm desperate.
Dishe said:
I did my homework first and got the Perfine from Amazon, not a no-name junk battery. When I couldn't fit it without removing the sticker, the seller was really helpful and actually offered to replace it after checking first that it fit in *THEIR* V20 at the factory. Really solid customer support. And according to Accubattery, it really is the capacity it says. Or at least within 99% of it (I think it estimated 4080 or something like that). So I don't think that's the issue.
That's actually really interesting- I did take apart the phone to do the thermal mod thing (wiped off the dried up pink gunk and put a thermal pad there), but it seemed pretty clean otherwise inside when I did. How on earth did you figure out that was the problem?
After speaking with some folks on Telegram, Reddit, and other corners of the internet, I have a different theory. A bunch of people told me to let the rom "settle", that battery life is never good after a fresh format or new rom flash. Honestly, the critical thinker in me says that sounds like nonsense. I've never heard of this before and I've been flashing roms for the better half of a decade. I'd think after it takes the time the load up your apps and settings and configure itself, it would be done. But I Googled it, and it seems to be a hotly debated subject.
Those that swear by it claim that whenever you start fresh or flash a new rom, it takes anywhere from one to a few battery cycles before the kernel calms down. Perhaps it is doing some sort of internal calibration based on your battery life and system demands or something like that. The theory seems to be that the Kernel doesn't allow the CPU to fully doze until it is done with this process, which sometimes takes days. I don't know, but the more I read about it, the more it sort of started sound plausible. When I got the phone, I tried out some things on it myself without a SIM card first, just to make sure everything on it checked out before giving it to the wife. Then, I did a hard reset, popped in her SIM card and let it do its thing. That's when we realized battery life was pretty terrible, as after 10-12 hours she already needed to charge... and this was on the 4100mah perfine!
I tried another hard reset, and when that didn't fix it, I decided it was time to root and see if I could get to the bottom of the bad battery. It seemed the kernel was where a lot of it currently went according to battery stat apps. After downgrading my H918 to Nougat so I could install TWRP, I promptly flashed Alpha Omega Oreo 20H and restored her apps. Turns out the next morning we couldn't sync her smartwatch, somehow we broke bluetooth (going into BT settings would crash the phone everytime). So weird, and while we were at it the battery life still wasn't great. So I did a hard reset that evening and found that even with nothing installed, BT was borked. (looking back at it, I think I should have flashed an Oreo rom like the stock 20H rooted first, and THEN the AO rom. I think going straight from nougat might have led to a driver mismatch or something)
Anyway, after that didn't work I flashed the stock rooted 20H rom, and lo and behold bluetooth and everything else is working again! But the battery has been bad all along and is still doing its generally suckiness thing.
BUT... as someone pointed out, if this kernel settle thing is real, I've been pretty much flashing and resetting this thing every other day. If roms need to "settle" first (still a debatable subject), than I never really gave it a chance yet and that's why I'm constantly seeing battery drain from things like Kernel even on different roms! And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
All I know is I'm going to give this a couple of days before deciding on a plan B. Seems too simple to be the reason, but hey- I'm desperate.
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Ive experienced ROMs settling in and battery stabilizing after a few days. But this was pretty far back with the HTC M7 and M8. Most modern phone's I've flashed pretty well settled in within the first few hours. The battery life on this phone was never amazing. It was good to just Ok for most when it was new.
If you flashed the stock rooted rom and still had bad battery life, I still suspect the battery itself. I still recommend one of the battery I listed earlier. If the perfine didn't work out try a different one.
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clsA said:
Ive experienced ROMs settling in and battery stabilizing after a few days. But this was pretty far back with the HTC M7 and M8. Most modern phone's I've flashed pretty well settled in within the first few hours. The battery life on this phone was never amazing. It was good to just Ok for most when it was new.
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Right, with the stock 3200mah battery. With the Perfine 4100, a lot of reports are saying 6-7 hours SOT or at least a full day of regular use. That's good enough, really. Mine is dying at half of that. I'm wondering if I have faulty hardware. I could put the stock battery back in and see if it dies much sooner.
I'm actually wondering if someone can check their mA use per hour with the screen on vs off, and I can see if the numbers make sense on mine. Accubattery is pretty good at the math.
Dishe said:
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And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
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Phone was up and running for 2 weeks, so it wasn't due to fresh reset.
GSAM battery monitor showed kennel wakelock, something about USB OTG in the top of the list, so I figured the port was my first check for a problem, and it was. It wasn't obvious that there was dirt or foreign matter in there, because it looked clean. But sure enough, after the light brushing with 94% alcohol, the problem disappeared.
I'm not saying this is definitely your problem, just throwing it out there.

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