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Battery life and self powering on.

[Grrr lost message because of board login timeout]
Hi all,
I wonder if anyone else has had similar problems with their Rafael or has any suggestions...
I first got my Rafael (a stock O2 (UK) XDA Serra) back in February. At that time the battery was lasting about a day and a half between charges which was comparable with my previous Artemis (XDA Orbit). This is with my normal use.
About 6 weeks later the phone was needing recharged after about 5 hours of my normal use. The location I was using the phone hadn't changed, so this can't be put down to signal strength meaning the phone is using more power to compensate. My usage hadn't changed either, and I had not instaled any software that ran up the GPS in the background or anything that woudl cause extra drain.
One thing I did notice before I sent the phone back to O2 for repair was that occasionally I would take the phone from my pocket and the screen would be on, an app would have launched (like SMS or email or something) and the text entry area would be full of a repeated character. So the phone had obviously woken up from standby in my pocket.
The phone (and bettery) went back for repair and came back with a note saying that the fault had been found and repaired - unfortunately it didn't say what the fault was that had been found.
For a few weeks the phone seemed a bit better, but now about 3 weeks later it's doing it again.
Yesterday the phone was left in standby and not used at all. From full charge and just taken off the charger, the battery was dead within about 5 hours!
The waking up issue is a bit more than just inadvertantly touching the power button. I now have the phone in the supplied case/cover the other way around which protects the power button more meaning that I can't switch it on by accident. But sometimes I take the phone out and its on as before.
Even more odd is that sometimes if I pick the phone up of my desk by the sides (ie fingers nowhere near the power button) it switches on. And if I have used the phone and switch it back to standby and go to put the phone down, sometimes it wakes up again before I have managed to put it down...
A soft reset seesm to cure the waking up problem for a while, but after a few hours it seems to come back.
Obviously the phone waking up will cause extra battery drain, and that would mean the two are related or even the same problem. But does anyone have any idea what it could be and why a soft reset seems to sort the problem? Has anyone else seen this problem?
Obvisouly a battery life of just a few hours means this is not such a mobile device anymore!
Cheers,
FM

Update:
I sent the phone back for repair (to O2 UK) and they apparently found and fixed the fault.
When the phone came back it still seemed to have the same problem, but I tried it for about 6 weeks until I was absolutely convinced - it did!
So, back to o2 again, this time it was returned 'No Fault Found' - having done nothing to the phone.
So once again it was sent back, this time I was demanding a replacement handset as they were obviously unable to fix the fault.
A replacement handset turned up a week later. Note that this was not a new handset, but a refurb from the repair centre and it already had about 9 hours of calls on it and a dirty screen!
After putting all my apps and things back on the phone one at a time just in case it was a particular app causing the power on problem and the battery drain, the phone seemed absolutely fine - no switching itself on and battery life of a few days (estimated over two days). This was without the SIM card in though.
After 4 days when all my apps and things were back on I finally inserted the SIM and made my first call on the new handset...
...arrrggghhh....
This handset had a faulty speaker (earpiece, not handsfree loudspeaker)... sounding like a badly tuned analogue radio. Calls to a few numbers confirmed the handset at fault (the cracking started as soon as the speaker activated before the ringing tone started).
So after another heated call with o2 I eventually learned that they are no longer supplying the Serra (Raphael) and that my only option is repair again.
Oh no. Not going to happen. At this point I am 4 or 5 months into a new contract for which I paid for an upgrade to the Serra and have not yet had a new working handset. So I demand a replacement.
As they are no longer supplying the Serra, I have had to make do with an SE Xperia X1 (HTC made anyway, and just rebadged by Sony Ericsson), but in my opinion an inferior phone despite the widescreen.
The X1 has no accelerometer, no TV out, won't run Ton Tom Navigator 5 (of which I have a legit paid for copy), has a few supplied apps missing compared with the Raphael (RSS Hub, WorldCard Mobile - although they are available elsewhere incl links from these forums), and inferior remote control on the headphones (though better headphones, it must be said), and only a 3 row keyboard.
The loss of TF3D is no problem as I never used it anyway - I don't use the X1's 'Panels' either.
The X1 does seems to 'stick' a bit more often than the Serra did as well, but I'm managing to live with it so far - especially as I now have a battery which isn;t dead by 2pm each day!
-FM
P.S. O2 UK customer services were apalling. It was only after 3 months of grief that one day I eventually got to speak to decent people who genuinly seemed to want to help. One bloke (a supervisor!) I spoke to (called Nathan) was the most utterly rude and unhelpful tosspot I've had to deal with in a long time. Not only was he accusing me of 'trying it on' but he refused to even entertain the thought that I had received less than satisfactory service from O2. His superiors wil be receiving a letter very soon, when I eventually get this completely sorted - which it isn't quite yet.

Screen turn-on glitch?

My original Charge died yesterday and I got it replaced today at Costco. This one seems even quirkier than my original Charge.
In particular, it does this weird screen hiccup thing whenever I take it out of standby. Here's a video of it:
http://www.youtube.com/watch?v=Ie404frcnbw
Also, it drops 4G constantly. Usually to 3G, but sometimes down to 1x. My original Charge never did either of these things.
Anyone else having issues like these?

ya, i had 3 replacements that did the same thing. one also had a white cirle and the other a black circle on the screen when it was waking from sleep and the 3rd was just very unresponsive among other issues like force closes and such. It would seem that the replacement phones they send out are garbage. At the very least quality control blows on clnr charges. I was sent out a total of 5 charges. 3 had the same issue you have plus other issues. 1 had a blown speaker when making calls and the 5 seamed to be ok till today. Starting to have a few issues but idk if its just the phone or if some other defect. I started another thread asking for feed back. so far 70 some view no responses lol
May need to just keep exchanging till they send you a good one. the phone in general is awesome. My wife also has one and has never had an issue. I havent been that lucky with clnr charges.

[Q] ATT - Samsung Skyrocket Getting Heated Up - Exchanged Phone !!!

I just bought Samsung Skyrocket phone from ATT, initially after about 20 mins of video or voice chat phone was getting really heat up at the back by the camera. I exchanged the device but still the same issue. Is this just how Skyrocket works or is there a setting which can be changed? It is getting heat up than normal phone

Mines been fine. The only tome it'll her hot is if I'm playing gta + charging the phone.
Or if I'm talking + charging; and even then its after like 5 minutes of use
Sent from my SAMSUNG-SGH-I727 using xda premium

They get warm under constant use. Make sure your battery is seated well. If it causes issues with the phone exchange it again, otherwise I think it is normal for these phones.

Any phone will get warm (not hot) with prolonged use. My inebriated girlfriend kept me on the phone for 2.5 hours last night. I wouldn't say it was ever more than "warm." By no means uncomfortable.

Same problem. After 15 mins of talk time i wouldn't be able to hold the phone close to my ears. I don't two devices can be wrong, its probably something wrong with the manufacturing of Skyrocket. I am very disappointed and returning this back unless someone here has a trick to reduce that heating? Thanks

Try charging and running GPS at the same time, and you can cook your hand. I was guiding my wife yesterday trying to find car dealers and with the phone plugged into a car charger + running GPS, I had to set it down because it was getting too hot to hold.
Doesn't seem much different from any other phone I've used GPS extensively on, other than it got to those temps a lot faster than most. I mostly figured that was related to the fact that it's such a thin device.

If I use navigation while I'm driving, it gets more than warm.
If I charge it while navigating, it definitely gets really hot. I believe it may even overheat and the GPS turns itself off temporarily for a minute.
It gets warm during phone conversations.
Other than that, it stays cool doing anything else like playing a video for even hours.

Lucidmike said:
If I use navigation while I'm driving, it gets more than warm.
If I charge it while navigating, it definitely gets really hot. I believe it may even overheat and the GPS turns itself off temporarily for a minute.
It gets warm during phone conversations.
Other than that, it stays cool doing anything else like playing a video for even hours.
Click to expand...
Click to collapse
Hmmm...then really whats the point in having this phone when other phones do not have this pbm

have not had any issues with the phone, only been warm when tethering via hotspot

Mine gets pretty toasty when charging and talking and using GPS, but I've got a case on it as well (which probably isn't great for the battery) but I don't notice the heat as much because of the case.

Check your actual battery temperature and see what it is when it is warm and post the results here

Mine gets warm if it's sitting in my pocket in an area w/ spotty connection. Needless to say, my battery also drains very rapidly when this happens, too.

dumb question..how do i check?

Mine gets heated under extensive use...I used wifi and slacker for 3 he's and if was warm.
rocketed to da sky using mah brain and mah thumbs...

I tried the following:
i) rooted the phone
ii) removed all att apps
iii)disabled 4g
Used for 15 mins to make a call, still same issue it gets rediculously hot. I can say for sure it is definitely gets hot than a normal phone.
Wanted to give ONE last try, exchanged the phone at att store and this phone also had same issue. I gave up and returned the phone. I might get a S-2.

I would just wait...at this point there are at least 3-6 new devices coming out and the sr and s2 will be old news
s0619212 said:
I tried the following:
i) rooted the phone
ii) removed all att apps
iii)disabled 4g
Used for 15 mins to make a call, still same issue it gets rediculously hot. I can say for sure it is definitely gets hot than a normal phone.
Wanted to give ONE last try, exchanged the phone at att store and this phone also had same issue. I gave up and returned the phone. I might get a S-2.
Click to expand...
Click to collapse
Sent from my SGH-T989 using XDA App

I got a new skyrocket from AT&T and have exactly same issue - when I try to use GPS and talk on the phone while driving, it gets really hot.
Exchanged 2nd time Yesterday & if it continues, need to get something else -- surprisingly all the sales guys in the att store say that they haven't heard this problem :-(

I hear you guys complain about it but I no have teh issue
Sent from my SAMSUNG-SGH-I727 using Tapatalk

See the problem is, because of the nature of smartphones, and that android is actually a linux os, many problems people face are'nt actually hardware problems. They are problems caused by installed apps and settings the user themself had done. Dumbphones, blackberrys and iPhones lock off this functionality, which is y I don't consider them a computer in ur hand, android is. That being said it is both a blessing and curse, this flexibility we have

Lucidmike said:
If I use navigation while I'm driving, it gets more than warm.
If I charge it while navigating, it definitely gets really hot. I believe it may even overheat and the GPS turns itself off temporarily for a minute.
It gets warm during phone conversations.
Other than that, it stays cool doing anything else like playing a video for even hours.
Click to expand...
Click to collapse
Same here. Navigation while charging in the car gets very warm on mine.
Sent from my SAMSUNG-SGH-I727 using xda premium

Heat issues

Is anyone having their phone heat up a lot while on a phone call?
Sometimes while the phone is in my pocket my leg starts to sweat due to the phone getting that hot. I just got a case but that only cuts the heat in half(but still hot).

solidmac said:
Is anyone having their phone heat up a lot while on a phone call?
Sometimes while the phone is in my pocket my leg starts to sweat due to the phone getting that hot. I just got a case but that only cuts the heat in half(but still hot).
Click to expand...
Click to collapse
I picked up my Samsung Galaxy S6 and yes, it heats up abnormally..and it does it fairly quickly. I can hardly hold it to my ear while talking because of the heat.

Thought I was the only one with the issue for a bit.. the longer the phone call the hotter it gets.

OH man here we goooo

portable frying pan make sure you carry eggs and bacon with you at all times lol

Well try it your self if you think we are kidding.. get in a 10+min phone call and feel as it gets hotter
I will try to recreate this when I get back home. My guess is that it has something to do with the volte.

I was on the phone with T-Mobile for over an hour yesterday and my phone never got hot..

ingenious247 said:
I was on the phone with T-Mobile for over an hour yesterday and my phone never got hot..
Click to expand...
Click to collapse
Ok, I have Sprint...but I doubt the heating issue is carrier specific Just run a simple Speedtest 8-10 times and you will see your phone heating up. If not, I need to go and get a new phone. This may be an isolated issue with a few phones.

My phone is from tmobile so maybe it's not related to specific carrier models

I'm on Sprint and my G6 gets super hot as well....... Why is it anytime I get a new phone, it has issues? Ughh..... And I'm coming from a Nexus 6

Interesting, I do not see any other site reporting this issue yet. Probably they will report it on Friday when more people will get the phone in their hands. And yes, it sucks that much anticipated galaxy 6 heats up so much.

dagreek05 said:
I'm on Sprint and my G6 gets super hot as well....... Why is it anytime I get a new phone, it has issues? Ughh..... And I'm coming from a Nexus 6
Click to expand...
Click to collapse
Heating is common, I remember my galaxy s3 heating upto 50 deg in summer while browsing or heavy use. I got a nexus 6 last month and it had an uneven display, so I replaced it and the replacement had the same issue but not that severe. I returned it got back my money. Now I am planning to get the s6 tomorrow. The always flash on is a problem for me. Check out the forums many people are reporting their flash is always dimly lit. Heating isnt an issue, both my n6's would go upto 45 -48 on intensive use.

dagreek05 said:
That comment was super necessary...... The phone gets quite hot, it's a legitimate concern. This forum is here to post concerns and questions, u don't have to be a troll.
Click to expand...
Click to collapse
Not trying to troll, I apologize. It's just not real world usage running 10 speed tests in a row and then thinking there would be no heating of the device. Anytime you run a performance test is going to push the device to it's limit, you're downloading & uploading tons of data over and over at max speed
Sent from my SM-G920T using Tapatalk

I believe he was meaning an internet speed test, but it happened to me from just starting my phone. It was so hot that it felt as if I could cook a burger on it, and I wasn't running anything. I will say that it does get warm now, but ever since the update it hasn't gotten that hot. Maybe that was part of the update, a voltage setting or something.

dagreek05 said:
I believe he was meaning an internet speed test, but it happened to me from just starting my phone. It was so hot that it felt as if I could cook a burger on it, and I wasn't running anything. I will say that it does get warm now, but ever since the update it hasn't gotten that hot. Maybe that was part of the update, a voltage setting or something.
Click to expand...
Click to collapse
What update? Did sammy issue an update? and btw is anyone here facing the flash always on or the flash dimly lit problem here?

Siddheshpatil said:
What update? Did sammy issue an update? and btw is anyone here facing the flash always on or the flash dimly lit problem here?
Click to expand...
Click to collapse
Yes there was an update pushed out for the tmobile version of the phone. I do not know if the other carriers got an update for that aswell.
Just did a non-VoLTE(HD) call test and the phone did not heat up . I cant test the VoLTE right now as I don't have anyone available to call. It could be an issue with Volte and I would have to take it to the store if I can reproduce the issue.
I would like to add that on first setup when I started downloading all my apps (did a NFC user swap), the phone got too hot to hold in my hand.

i am also on sprint i have noticed my device get really hot what should i do

When I was downloading my apps onto it the back got very warm but that's the only instance I've noticed so far.

Just want to report today I was in an HD voice call with the phone in my jeans pocket walking around and the phone overheated and did a self reboot. Might take my phone to T-Mobile to have them look at it.

overheating as well when listening to music... VZW

Huawei P9 Battery issue thats "somewhat" confirmed by Huawei

OK it all started when the temperature where i lived dropped below 10 degrees Celsius and my Huawei P9 could not hold a charge for more than 30 min. when being outdoor.
I contacted Huawei about this issue and was told that was normal and a safety feature in my phone and i should use it out doors and keep it in a case and in my pocket.
Well thinking ok then this kinda beats the point of having the phone if i cannot use it out doors for 6-7 months a year and also no rely on have a phone to use for calls say should my son or some one else get in an incident where you would need to call for help or you wanted to call a taxi or just take a picture ..... i heard that some phone can do this now adays
So finally i convinced Huawei that the phone should be looked at by a repair shop that they used and i send it in and got the reply nothing wrong with the phone ... but it would still just die after being in my pocket and taking a 30 min walk.
So back to the repair shop it went, this time it came back with a message saying that they changed the main board of the phone ... Nope did not work and still the phone would just die after approx 30 min while in my pocket after a walk out side.
3rd. time back to the repair shop and the reply was, Nope nothing wrong with the phone and you just have a phone that you cannot use out doors in temperature below 0 degrees celsius
Well this kinda blows... so i have had the phone for about a year and i cannot use it out door on most of the year and ... BEEP*** so i wrote Huawei again and again to get them to find a solution for my problem
either they got tiered of my complaints or something else but all out of the blue Huawei wrote to me on facebook saying that well they are now aware of a battery issue on the Huawei P9 phone ... i cannot get the official information from them confirming this but will share the message i got from them on facebook "image attached to this post."
Translated from Danish to English it says:
There just came some news about the issue you're experiencing.
It turns out that there is a problem on some of Huawei's P9 models, as you describe it.
As I said, I have received a mail tomorrow that the problem can be solved by changing the battery.
I'm sorry that it has taken a long time to find - but we actually note the issues people write about and we'll send it on.
Sometimes it takes a little longer for Huawei's developer and test department to find the error.
Everything indicates that your phone should work exactly as desired if it changes the battery.
I would recommend telling Telenor or Care1 that it is a message from Huawei's technical department.
So in general i am not done with this case .... but i felt like this was information that might help anyone else in here that have the same issue with their Huawei P9 phone and dont know what to do about it, and could use this information that i have from Huawei via their facebook support.
Again my little "adventure with a phone i cannot use out doors" and Huawei support.

Small update:
Huawei here in Denmark cannot say witch models of the P9 that have this issue but they confirmed to me over the phone, that within the last 24 hours they did receive information in their support department here that there is an issue with some of the Huawei P9 batteries and where this will result in that some phones will shutdown when getting cold and this is also when in temperatures above 0 degrees celsius after short time of use, no matter the level of charge there is on the battery beforehand
so now for the 4th. time, my P9 is in for repairs .. Hope they get it right this time.

Bummer, man, no doubt. Hope you get it sorted soon.
I, on the other hand have no such issues. Temperatures here have been oscillating around 0 Celsius for about 2 months. I spend lots of time outdoors and the battery drain is just the same as it is indoors.

I had a similar problem. I was outdoors taking pictures of the first snow and keeping the phone all time out or in the outer pocket . It was about -3 Celsius and after two hours phone shut down displaying that battery was empty. When I went back indors, to warm, I switched the phone and the battery was still 65% full.
Later, I spent a weekend skiing, but keeping the phone under the jacket (pulling it out when needed), and didn't have problems with battery.

Same here. Went skiing and P9 will shut down due too cold, especially when the battery was lower than 50-60%.
To be honest I thought it was normal as the iPhone of a friend of mine behaved the same: it turned itself off due to the temperature (-10°C).
I managed to continue keep it alive by putting it under the jacket and not keeping it out too much while taking pictures.

I would not complain for -10 C, I think no phone will work. But my experience was on -3 C, I was with my wife and her older phone (with older battery) Galaxy worked just fine, even less charged than mine P9, under the similar conditions (holding in hand, taking pictures)

Its really common, mostly in iPhones and LG, but every device can behave like that in -10C conditions. Especially phones with metal backs that are not protected by user from such harsh environment(because if you live in such cold place cheap rubber case is useless).
I would not call it a major problem, especially when manual it self clearly say that minimum temperature that you can use phone is 0*C
But dont look at number it self, thermometer can show 0, but because of humidity of air, any electronic even at 0*C can behave like it is less than that.
And because metal body and getting phone out from pocket to cold air few times its a matter of minutes when the moisture will gather inside and phone will shutdown preventing from damaging it permanently.

I know that there are other things that could be stated as "major problems"
But i will however still say its somewhat of a problem as a phone that is less that a year old cant hold a charge for approx 30min even when at 100% charge when going out the door and this is even when its in a cover and is either in ones hand or jacket pocket and this is even in temperature that is between 0 degrees celsius and +8 degrees celsius.
But still i have taken me around 2-3 months to get Huawei to finally say ok there is an issue with the batteries in some of the P9 models and if you have this issue with the phone shutting down you should get the battery changed
I have also several times requested Huawei to share the information they have on the batteries, but i guess you all knows who hard it is to get a manufacture to release that kind of information to the public, so no luck there.

First of all, many thanks to you -> freetechdk ...
But, what happens now?! Do you, or will you get a new battery, paid by Huawei?
We do have, sort of the same Problem... Unfortunately it is getting worse rapidly ...
My wife has is p9 and was happy so far... just about 2 or 3 months ago, the battery was getting worse. It hasnt shown the effects it does now, but was getting drained very fast (she had to charge nearly twice a day, which, i know, depends on your own usage, i know... but..., twice a day...) Then, just about a week ago, she dropped it that hard, the display was smashed... So we had to change display, what happened last tuesday. Since then however, the phone is reacting very strangely! We now have exactly the same effect as described by you! 70% full battery, went outside at about 3°C and the battery was at 1% and the phone shuts itself down... Somehow i am relieved that it seems to be the battery... why?! Because, very carelessly we handed out the screen-lock to the guy who changed the display... i really wasnt thinking, because my wife and baby have been waiting in the car, in the cold (because the littleone was sleeping). just when i came back to the car, i thought "what the *** have i done" :-O ... and praying, he would do nothing bad... then, when we got the phone back, it was reacting strangely so my first thougth was ?! Spyware ... We are not sure, maybe it is "poisoned", but the battery thing seems to be a legit reason for the phone racting this way... So, we might try to change the batt... (and are still praying, for no spyware ... by the way, does anybody know how we can check this?! I tried (from ggl play):
antispycell.free
arcane.incognito
cleanmaster.security.stubborntrjkiller
and have all been negative so far... also i have been looking through processes and, i dont think anything to be fishy there as well... Anyhow, any hints would be appreciated!
Sorry for off-topic question
Greets

So had a talk with the repair shop that Huawei said i had to use due to warranty and so on, also the place the phone is now and they will change the battery as a warranty case.
The other main issue in all of this is that this is the now the 4th time that the phone is in for repairs with this issue and the repair shop have also previously changed the main board of the phone, so by no i really have no faith in the phone even if huawei now claims that this will fix the issue.
So after pleading my case to the repair shop and had them contact huawei and convince them to call me so we can sort this out, they will not see if they can do something else for me than just trying to fix my phone for the 4th. time with in a year.
So nothing is set in stone right now but looks to that huawei is swapping out my phone to a new P9 or something newer.
But this was all just because my tele service provider that sold me the phone had failed several times when trying to get them to fix it and then have a ton of issues getting huawei to take my problem seriously over for the last 2-3 months.
But when i talked to the person from huawei he did tell me that the battery issue for the P9 is something that they only found out was an issue with in the last week of Jan. 2018.
so if you have a P9 that have issues with holding a charge in semi cold weather / environment i recommend you contact huawei about the issue and have them swap the battery, but this all depends on the warranty rules in your country, here in Denmark these rules / laws are really good and does provide a descent level of aid to customers that have a defective product.
I used the support chat they had on their facebook page, the support there is not great but you do in some way get semi direct contact to huawei.

Just yesterday i contacted Huawei. After asking for IMEI and Build-Nr they told me that more or less, this is a Battery issue due to high power consumption because of the temperatur and advice me to
only use the Phone in enough warm environment
Click to expand...
Click to collapse
Are you f***in kidding me :cyclops: ... what do i have a mobile-phone for, when i am not able to use it??!??!

Well my exact reaction when i first talked to Huawei about all this ... !! stupic to have a phone you only can use when your indoor or in a warm climate.
But Huawei here said that mine phone where one of those that needed a battery change... well they did this, but would guess that the repair shop did something wrong because when i got it back it did random reboots all the time..
4 times while trying to set it up again after the battery change.
Sooo a rep. from Huawei's service deparment called me last week and asked if i would send it back in and have it swapped out for a new Huawei P10, well OK with me, BUT IT BETTER NOT be the rose gold version they are gonna send back to me.
Hope you get through to huawei and get them to fix your phone!!

OK so the Huawei P9 battery issue came to a close for me.
Huawei gave me a new Huawei P10 as a replacement for the broken P9 i had
But still from my point of view some P9s for sure have a battery issue that Huawei should do something about and i would recommend all that have this kind of battery issues to contact Huawei and try to convince them to change the battery in their phone.

Hey guys, thank you so much for making me aware of this!
I sent in my phone for repair because it was losing 1% battery every 1 min (and that with a lot of battery saving tweaks already) on a day we had -5°C.
And it automatically shutdown in between, rebooting showed 1%, so I went to a repair shop by the provider and suddenly charging it turned on with 56% battery ... and then me and the repair inspector (they inspect the phone, if it is a very quick fix they do it, but otherwise they send it in) we saw mentioned 1% per 1 min together and so we sent it in.
I originally went into the store because suddenly the SD Card & Sim were failing. Guess what, charging the phone in the warm store/repair shop and it worked again FLAWLESSLY.
Any advice what I should write Huawei when I get back the phone and it still happens? I mean it has still warranty, so that must fall under it.

Mine does this as well, shuts down on heavy use on sub zero temperatures , but it's normal that after 2 years the battery would be on the end of it's life cycle ...

I kinda see improvements on battery with MR4 to be honest. Not while it's cold tho. We had some - 20oC here till last week so phone was shutting instantly when it was not in my pocket. Definitely I can tell you that battery lasts more but I use Facebook Lite, messenger Lite and everything else is deactivated from running in the background. I get like 35 hours standby otherwise with heavy usage 6-7 hours. If you wanna try Magisck rainbow 4 please do a clean install after at least c432b395 version

I have the same problem, so now I can tell the tech what the problem probably is. Thank you
-Fellow Scandinavian

Same problem here with my gf's P9. Just started to occur this January. Good to know it's somewhat acknowledged by Huawei. I just hope I can find the receipt (she got it as a gift from her parents...).