Real Mail Problems On Lumia 1520

Just got my first Windows phone, because I have always used Windows... remember 3.1? I have used Androids and iPhones - but never great fit for work AND home use. So, there is enough software available on tablets to start making them a real business tool. But who wants to carry around a tablet and a phone? I am sorry, I move around and work in a lot of different businesses, so a backpack or a messenger bag just is not an option. So I look at and play with a demo Nokia Lumia 1520 - wow - looks great, pretty light, pretty thin, beautiful screen, responsive, Office - hey, maybe I do not need a tablet and a phone after all!! The keyboard is a really nice size and if Microsoft proportions it better in 8.1 it would ROCK. I can actually fill out forms and do some real work on this. Not to mention a lot of the new features of 8.1 - this looked like a real keeper. Researched and it has some nice reviews. All of the reviews I have read were pretty positive - no major problems mentioned.
Bought it. Brought it home and started to set it up. I have never had a problem setting up my work e-mail on any android or iPhone I have ever used. I work for a non-profit which by law has to have a secure mail system. Like I said, I have never had a problem setting up mail before on any android or iPhone. But it is a "no go" with the Nokia 1520. This became over 8 hours of reasearch and talking to Microsoft Support. Guess what - because the 1520 has an SD card capability and cannot encrypt the SD card, the phone cannot be used with Exchange Mail if it requires security settings. Remember, by law my mail has to be secure. So when I try to use my e-mail I get the message "...requires that certain security policies be enforced before you can sync your information. Contact a support person or your service provider. Last tried x minutes ago with error code 85010013"
My phone calls to my office phone are digitized and sent to me through secure e-mail. Opps - no longer get phone messages easily. Cannot get work e-mail unless I bring a computer, another phone, a tablet, or go back to my office between travels. That size advantage has just disappeared. The phone is not a brick, but it is close to it. I think that Nokia should put a warning on their web site, along with Microsoft and ATT, that "THIS PHONE MAY NOT BE ABLE TO SYNC WITH ALL EMAIL ACCOUNTS"
OK - 1520 uses Microsoft OS, mail uses Microsoft Exchange, and they cannot work together. This problem has been known for quite some time now. No patch. No solution. Microsoft is aware of the problem. When I asked if they were working on a solution the reply was do not count on it - they may or may not be - they do not announce patches. So for a $600 phone(I got 32gb) would you take a chance that maybe sometime down the road that phone MIGHT be able to access secure mail? Do they expect to sell this phone to a lot of business clients with corporate e-mail accounts? To be honest - I see this as being a No Brainer. Obviously, ATT, Nokia, and Microsoft have... What a waste for what would otherwise be a great phone!

+1
I'm having the EXACT same problem.

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Nokia Lumia 1520 having problems with Voyager Lege...

I recently purchased Nokia Lumia 1520 and I am having some problems with Plantronics Voyager Legend. Before 1520 I was using HTC Radar 4G with Plantronics Voyager Legend and I don't have any problems. The problems that I am having are, when I am on a call using the Plantronics Voyager Legend the voice of the person will automatically switched between Plantronics Voyager Legend and 1520 through out the entire conversation back and forth. It does read all my text messages without any problems. Another problem is on my HTC Radar 4G once I turn on the Bluetooth under setting Bluetooth stays on even after I reboots the phone. On 1520 after rebooting the phone Bluetooth is off automatically by the Windows 8. Why does it do that? Are there any workaround or fixes for my issues

My Voyager Legend firmware is up to date. This Voyager Legend works with all my others electronics without any problems. Problem with Nokia Lumia 1520 only. I think the problem is 1520 Windows 8 OS. I am waiting on Plantronics to contact me but looks like I am at the bottom of the list. Does anyone know why after rebooting the 1520, Nokia Windows 8 OS automatically turn the Bluetooth off in setting, under Bluetooth everytime?

Nokia Lumia 1520 - Screen Brightness Problem

I have two Nokia Lumia 1520.
Both of them have the same problem. I will explain the problem to you in detail and before that let me assure you I am a Windows Phone long time user , have been part of the development , developed several apps for the platform and I have used Lumia 800 , 720 , 920 , 925 and now 1520. So I am well aware of all the settings , sunlight readability , automatic brightness etc. This problem is not due to any of these , I can assure you
Now the problem ,
I set the automatic brightness option OFF
I move the brightness to HIGH
Then I lock the phone
When I unlock the phone , the brightness drops by 10% suddenly without any intervention
This problem happens sometime. Some days I see this problem , some days I don't and there are few days where I see this problem very heavily.
I purchased another 1520 and it has the same problem. I am very sure , from my experience that this is a firm ware issue. This is NOT a hardware problem , but a serious problem from your software end. It is prudent that Nokia recognizes this problem and finds a solution to this. Interestingly , I am not the only one who is facing this problem , the whole globe is facing the same problem and for such a pricey phone , this is a frustrating experience - very frustrating. I am sending some links , which will show the problems users are facing:
http://forums.wpcentral.com/nokia-lumia-1520/255608-lumia-1520-screen-brightness-dimming-unwantedly-...
http://forums.wpcentral.com/nokia-lumia-1520/251303-screen-dimming.html
http://forums.wpcentral.com/nokia-lumia-1520/252501-screen-brightness-fluctuates-purpose-bug.html
http://forums.wpcentral.com/nokia-lumia-1520/255508-lumia-1520-screen-brightness-problem.html
The phone is rock solid and amazing except this irritating problem.
I have only few days within which I can request a exchange from the merchant. So if any Nokia official can confirm that a software fix is on the way , it would be super helpful
Nokia , please help !
Moderator's note: We have removed the IMEI numbers. Posting of personal information is not allowed in this forum for security purposes.

I have Nokia Lumia 1520 Black.
I have also been facing the same problem with screen brightness.
The problem occurs only when the Brightness is in Automatic mode.
--> When the Brightness is set to Automatic mode & take out from dark location to bright location the display turns out to weird grey color.
--> And then if the brightness is set to low, medium or high display comes to normal.
Is this issue related to the hardware or software.
If it is related to the Software will you be able to fix it ? or else How about the replacing with the new one ?
Awaiting for the response.
nonnin8 wrote:
Same here i have white 1520
I have another problem with the screen, when it wakes up or i get a call the colours are off grey colour are very light grey and after few moments it turns to normal.
I am using WP 8.1

Problem with SD card files on Lumia 1520

Dear all, my Lumia 1520 keeps giving problems with files on SD card.
I normally put pictures and music files on the SD card but everytime when I restart the phone, all the files on SD card disappear. According to the WP app all the files are turned into other data and I have checked that a hidden file (with no data type) could be found in the SD folder with the equivalent size of all the files I put on the SD card.
What can I do about it?
Attachments:
SD storage.PNG ‏6 KB

I also noticed this issue with a Sony 64GB microSD card. I had some pictures/videos on this new card and suddenly all disapeared. The card space used by some files is displayed under "other" and phone message says something about the file format is unrecognizable hence it has placed them under "other" to be managed by the user via PC but I don't see "other" folder when my phone is connected to the laptop with Windows 7.
Can someone on this forum help me?

Nokia Lumia 1520 out-of-the-box problem

I just got the Nokia Lumia 1520 from Germany and I took it out of the box all good and pretty, but when then I go and charge it since it didn't turn on at first (I have this british charger and a european adapter) and put it in the phone. I left it for a while to charge since the windows start button started flashing and now when I turn it on, it shows the Nokia start screen, then it shows that it's charging and then there comes a blue screen that flashes and it vibrates after that. Again the Nokia start screen shows and the blue screen flashes again, vibrates and Nokia screen again and so it goes endlessly!
I have never gotten it to start it just flashes the blue screen and turns off again
See the video:
https://www.youtube.com/watch?v=b4eOmqirqRk&feature=youtu.be
WHAT DO I DO HELP!

Sounds to me like the charger you are using is not powerful enough. Are you using the charger that came with the phone? You mentioned adaptors etc so thought you may be charging with another charger. You could also try charging with high output usb chargers, typically ones for tablets.

My Nokia Lumia 1520 has a plethora of issues

This is mainly about my Nokia Lumia 1520, but also some other Nokia Lumia phones.
After I inherited my Nokia Lumia 1520 I had to wait a few weeks before I could install Windows Phone 8.1 (Blue) + Nokia Lumia Cyan on it, after doing so I signed in with my Microsoft-account (as it was of a deceased family member before, and I was using his Microsoft-account, so I had to factory reset it), after resetting it I noticed a plethora of issues that weren't present in Windows Phone 8, no offence to anyone at Microsoft, but Windows Phone 8 had absolutely 0 bugs I ever experienced, no crashes, no oddities, ever since the new operating system was released all my phones as well as my ex-girlfriend's and my girlfriend's phones have been experiencing issues, but none more than my Nokia Lumia 1520, here is a summation of each phone. Note that I am a huge Windows Phone fanboy, so I have purchased several devices for multiple people, and I'll write what they've told me down here too. Note that most are either Nokia Lumia or Microsoft Lumia, but one is by the Cantonese manufacturer, Huawei so I don't know if that will be considered (ir)relevant by the moderators.
Nokia Lumia 1520:
* Sometimes the touch-screen randomly doesn't respond (which is really annoying while playing Age of Empires: Castle Siege where I lost the chance to get several British banners due to this error), this recovers sometimes by going stand-by, but this alternates and seems completely random when the screen gets responsive again, and when not.
* It randomly starts pressing physical buttons, and when I try to press them it's not recognized by the phone, and there is no way to turn my phone off or even put it in stand-by while it's doing this.
* There is no back-up for settings and app data, it did this before but for some reason it does notify me that I haven't backed up in a while and any attempt to back it up is met with countless of errors, before my phone backs up my data again I don't want to factory reset it because I don't want important data to get lost, so please help me fix this.
* It sometimes starts crashing random applications with provocation.
* Sometimes it won't charge.
* It crashes randomly while playing videos on Google YouTube and other websites.
* It can't download Lumia Help + Tips.
* Sometimes the screen goes all black, and the camera stops to work, but here is the odd part, whenever I click on the back-button and hold it it shows me the ''open'' applications, but they all remain black.
* Half of the time when I take pictures with it there is a 3 second delay, and most of the time those pictures aren't saved, so I only use it to take screenshots, and maybe 1 in every 10 screenshot is actually saved.
* It won't show the profile pictures of my Microsoft Skype-contacts.
* The calendar doesn't work on the lock-screen, and shows me the wrong information all the time.'
* Cortana randomly starts in the middle of other things.
* Internet Explorer Mobile randomly crashes and closes the tab I'm on at that moment.
* Internet Explorer Mobile randomly opens tabs I didn't ask for.
Nokia Lumia 920:
* The phone sometimes won't restart after going completely off unless one would hard reset it.
* There is no back-up for settings and app data, it did this before but for some reason it does notify me that I haven't backed up in a while and any attempt to back it up is met with countless of errors, before my phone backs up my data again I don't want to factory reset it because I don't want important data to get lost, so please help me fix this. (note for my Nokia Lumia 920 this happened after I returned from Hanoi, the issue has been constant on my Nokia Lumia 1520 even while it was in Europe)
* Microsoft Skype crashes when I want to upload a picture or drawing (unique to this specific phone, it works seamless on all the other devices).
* Microsoft Cortana often notifies me about news, but can't fetch anything when I click on the message in the Action Centre.
* It can't download Lumia Help + Tips.
* On some (Vietnamese) Wi-Fi connections it can't update nor download several applications regardless of size (for example an Angry Birds game called Angry Birds Go! that is nearly 1 G.B. nor an 8 M.B. N.O.R.A.D. Santa Tracker).
* When there is a flippable protective case around it the cellular network will crash, and can only be restored after rebooting it, before I got S.I.M. errors on it nearly 5 times a day, each time it required me to restart my phone.
* It permanently shows 2 unread mails in Microsoft Outlook and 8 in Google Mail for no reason, I have 0 mails in Yahoo! Mail but it does tell me that I have ''unread'' ones in several (NON-EXISTING) folders.
* The Calendar doesn't appear on the lock-screen, and if it does it's either several weeks too late, or shows me messages for months about things that happened last year.
* Sometimes one ear-plug goes without sound, rather than being a hardware problem it gets fixed by rebooting the phone.
* Sometimes I can't copy or paste anything.
* Internet Explorer Mobile often doesn't recognize images I want to save, while somehow it does recognize those same images either the day before and/or the next time.
Nokia Lumia 520:
* The phone sometimes won't restart after going completely off unless one would hard reset it.
* It doesn't recognize the Micro-S.D. card it did before (it worked while on Lumia Cyan).
* It can't download Lumia Help + Tips.
* It sometimes won't charge.
Nokia Lumia 530 Dual S.I.M.:
* After inserting a Micro-S.D. card it can't download in-app videos (Microsoft Skype) or voice messages (WhatsApp-Messenger) or even links (Facebook Messenger).
* It can't download Lumia Help + Tips.
* Sometimes it doesn't recognize the 2nd S.I.M. Card.
* Like before, the Calendar doesn't function on the lock-screen.
Microsoft Lumia 353:
* Touch related issues similar to the Nokia Lumia 1520 as expressed above.
Huawei Ascend W1:
* The phone will detect low storage even when there is lots of free space.
Unrelated to these phones, but still ''Nokia'' hardware is the Nokia charger that comes with Nokia Lumia phones for some reason doesn't work, I mean like ever, and Microsoft forces me to buy new chargers, plus I still use the charger I had on my old H.T.C. Windows Phone for my Nokia Lumia 920. All the above phones have many more issues, but I just simply can't remember them right now.

Confirm that Date / Time settings are correct.

Lumia 1520/AT&T: What is the best MicroSD card opt...

Hello,
I am writing to the Nokia forums because I have a doubt on which 64gb MicroSD card I should buy for my Nokia Lumia 1520 (AT&T model). I want to use this card for photos and video recording at 1080p up to 30FPS.
Doing some research, I found that for best results I need a Class 10 MicroSDXC card if I don't want the video to skip during the recording if writing the video directly to the card as I record. Apparently I also have to look for the UHS-1 designation aside from Class 10.
Therefore, I went shopping around in Amazon.com and I have narrowed down my choices to the following three cards.
Sandisk 64GB Class 10 UHS-1
Transcend 64GB MicroSDXC Class 10 UHS-1
Sony 64GB MicroSDXC Class 10 UHS-1
Out of the three choices which one provides the better option? I am leaning towards the Transcend MicroSD card, but would like to get a feedback from Lumia 1520 owners.
Michael
Nokia Lumia 1520 | Windows Phone 8.1 "Lumia Cyan"

The sandisk is the one I use with no issues whatsoever
Click on the blue Star Icon below if my advice has helped you or press the 'Accept As Solution' link if I solved your problem..

Software issues with lumia 1520 since wp8.1 update

Hello,
I have Lumia 1520 which I bought in may 2014. Last month I have updated to wp8.1. Initially it was doing fine but since last 10-15 days I have been facing a series of issues with my mobile. I suspect 8.1 update to be the reason as I never faced a glitch
in my 3months of heavy usage on wp8.
below are the problems I have faced so far,
1) screen blacked out suddenly. No response whatsoever. It was working, I can receive calls and notifications but display does not work. Phone was continuously heating mean while. I visited the nearest,care center even they were clueless. Only thing they
did was to hardreset my phone.
2) volume automatically becomes 0. I try to change it someone value but the bar goes back to 0. Its like the volume is playing with me.annoying it was.
3) the touch does not work sometimes. Its sporadic lock and unlock,it works fine.
4) few minor issues.
these issues really annoy me. These might be some minor bug fixes please take these up and resolve. I have gone through many forums and writing this. So
many users facing similar issues. Thanks.

I have requested our Windows Phone Device Update support team to look into this.
Can you also post this in the Answers forum?
We have moved our support forum for the OS Consumer Support (almost any support of the Preview for Developer
release that is not related to developing an application) to the Microsoft Community website. (http://answers.microsoft.com/en-us/winphone/forum/wpdp )
For more information, please read this thread: http://social.msdn.microsoft.com/Forums/en-US/b342fcb2-faa2-4415-9a95-687f0ecdd4a2/move-of-preview-os-issues-forum-to-ms-community?forum=winphoneosissues

Nokia Lumia 1520 - Where can I see it?

Hi,
I'm really interested on Nokia Lumia 1520 but provided it's a pretty big device, I would like to hold it in my hand and feel it before buying it, just in case it's too big for me.
The problem is I live in London and I cannot find any shop that has it, apart from online sites. Do you know where I could try it or is expected to receive it in the next weeks?
Thanks.
Kind Regards

If I was you i'd try stores like Phones 4 U and Carphone Warehouse because if they have stock they will often let you seen an actual device rather than just a dummy model. With carphone you can check which stores have stock online via their website.
With it being new in the UK it may take another week or so before it's widely available.

Nokia Lumia 1520 video recording on Microsd card i...

First off, I have a Nokia Lumia 1520 for about one month now. I love the screen size and everything. My picture/video recording to phone memory works fine. I have recently purchased a Class 10 Sandisk Pixtor 64GB microsd card from Best buy for video/pictures storage due to this device having only 16GB of memory.
http://www.bestbuy.com/site/sandisk-pixtor-64gb-microsdhc-class-10-memory-card/1299201.p?id=12190475...
Picture taking is fine writing to this card. However, I noticed that on all video recording mode (720p to 1080p), the video would sometimes skip and lose a few frames here and there. For example, when i try to record a video of a kid running, the video playback will show the kid run across but would jerk or freeze a bit during his run (almost like the phone is too busy doing other tasks during recording). Playing the same videos on a computer show the same result which means the video taken were bad to begin with. My temporary fix is to switch video/picture recording to the phone storage itself but that defeats buying the sd card in the first place.
Anybody else having this issue? I couldn't find another microsd card to test but i wonder if the phone itself is having a performance issue with sd cards in general. Should i engage with tech support from Nokia?

It is quite well known that Class10 card are overkill on a mobile phone and in many cases have been proven to actually have worse performance when compared to even Class4 cards.
Class10 cards really only make sense in (high end) DSLR ca,eras where itis a requirement the shots can be written to the card fast. In practical use the class only indicates the card cab sustain a transferrate of X MB/s and with that in mind a Class4 card even will be plenty fast for your mobiel phone.
Due to the fact a Class10 card is basically overspec for the hardware it may even cause timing issues.
Click on the blue Star Icon below if my advice has helped you or press the 'Accept As Solution' link if I solved your problem..

Nokia Lumia 1520 Issue

Hi , I had issues with my new nokia lumia 1520 and the issues are as follows: 1)Touch and display problem and screen flickering and doesnt let me use any app on the phone and even if im trying to unlock my phone, it inputs its own password and locks the phone again. 2)Apps not functions as if i click one app another app opens 3)Phone hangs 4)Phone gets heated up rapidly with usage of camera 5)Music volume control issue as with full volume, the phone is still not loud enough at times 6)Paint behind the phone is pealing off and Customer care people (Marathalli Nokia Care) took the phone and finally says that my screen guard is causing all these issue. whereas i was using this phone for 1.5 month without issues untill i updated it to latest firmware 1028.3562.1402.0001. please provide your views as to what can be done next as this phone is just 1.5month old and I have spent a lot on this phone?

Remove the screen guard and take it back to Nokia Care, so they will not have a stupid excuse to refuse repair.

Nokia Lumia 1520 OVERHEATED Symptoms and Died Afte...

My new phone Nokia Lumia 1520 is beautiful and it works great. I like its big 6" screen and everything else it was designed to do.
However, for first two months of using this new phone, it started showing overheating problem. I remember overheating occurred at least 4-5 times in last two month period. Last time overheat issue got really worst yesterday. It was not hot enough to burn your skin but It got to the point of intolerable. Overheat happens when my phone was heavily in use: frequent calls, texting, and internet usage, and other apps running in background like Microsoft OneDrive Cloud. I talk many times over 15 and 30 minutes long on the phone, and the phone heats up. When it overheated, I stopped using the phone and let it cooled. It cooled off after it has a little rest. The battery was always good; it runs almost of the entire day and only needs recharge at end of day.
Then until yesterday, I turned on the feature "Internet Hotspot Sharing" in Settings for very first time to get my laptop online. I worked on my laptop for several hours. When I got home last night, Nokia Lumia 1020 was completely knocked out. It went blank and unresponsive. I left it charging the entire night. This morning, it didn’t even turn on or off. It was just a dark screen, dead weight.
Today I am going to take it back to AT&T service store and have it checked out. I went online today and found this overheat discussion going on, and so here I post my facts to share with everyone.
Usage in 2 month period (60 days):
Phone calls: 1,503 times, 25.1 calls per day
Phone call length at least 60 minutes: 1 time
Phone call length at least 30 minutes: 17 times
Phone call length at least 15 minutes: 66 times
Total minutes used: 5,271 minutes
Total Picture/Video /Text/Data Used: 735 times, 24.5 messages per day
Data used: 168 times
Text used: 476 times
Picture & Video Used: 91 times
Total data used: 3,695 MB or 3.6 GB
Solved!
Go to Solution.

To: yasfer21 Mobile Visionary
Looking at the statistic of many people reporting overheat problems with the phone. Does that tell you something? I think Nokia is aware of their inferior product. Nokia needs to improve their product quality or risk of losing customers like me. I'm one of many reports about overheat problem. This is not an issolated issue; it's commonly reported from users like me regarding this phone.
I will be happy to show you proof of my transaction with AT&T. I can post it here for everyone to see. I bet if you go to Nokia assembling facility, you would probably see tons of returned overheat phones. Research it yourself rather than speculating. Your thought is irrelevant to the overheat issue experiencing by users.
The replacement phone I received from AT&T seems to be working fine now. It's working ok. Overheat issue has disappeared from the replacement phone. I will post my comment again if overheat issue repeats. Technology we using today is just a temporary for a better invention and idea tomorrow. Remember we have progressed from a little pager device clipped to your waiste 20 years ago to smartphone screen today?
There's no such thing as perfect on this planet earth, ranging from birth defects to space shuttle disasters Challenger & Columbia. All we can do is to learn, improve, and keep on moving toward Type 1 Civilization. We can never reach a perfect point, our universe is forever expanding.

Nokia Lumia 1520 mini?

I LOVE the design of the Nokia Lumia 1520. The slim body of the phone, the display, the camera, everything! But the only thing that I don't like about the phone is its too big! Although I know its a phablet. But I was hoping what if Nokia makes a mini Lumia 1520 of about 4.5 inch display? With the same specs maybe and in the same available colors. It will be AWESOME and look way more sexier Plz Nokia think about it.

called the 930 and coming soon..
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Nokia lumia 1520 Ram

How can i check the ram running on my nokia lumia 1520? I check the spec on nokia.com.my, there is 2 GB ram, but i check with apps, my nokia lumia 1520 only has 1 GB ram
Attachments:
wp_ss_20140111_0001.png ‏176 KB

The 520 is a 512MB RAM device. No opion to add more.
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Nokia Lumia 1520 Overheating & Battery Drain after...

Hello,
I've been experiencing an intermintent problem with my Nokia Lumia 1520 (AT&T, 16GB model) where my phone overheats and the battery drains. The problem started after I upgraded to Windows Phone 8.1 and Lumia Cyan. As of now I haven't figured out a good step by step method to reproduce the problem on demand however I have noted that when this problem occurs and I wake the phone and unlock it the Start screen shows a never ending or unusually long "Loading" message and my phone will overheat and drain the battery. So far the only way to mitigate the problem is by shutting it down manually or performing a "soft" reboot of the phone. Afterwards the problem gets resolved and the phone resumes normal operations after rebooting with the phone returning to a normal temperature and battery drain rate that is consistent with the use it is being given.
Given that I don't know anyone else carrying a Lumia 1520 has anyone seen something similar to the problem I am describing on this post with their Lumia 1520 unit after updating to Windows Phone 8.1?
So far the only big resolution step I've taken is to perform a complete phone reset and not recovering the phone from my back ups, effectively making it a "new" phone in terms of settings and software conditions.
My theory for this problem is that it is software driven as an overheated phone and a stuck "Loading" message instead of the Start screen after unlocking the phone indicates that a software process (either OS or separate Application) may be behind the issue.
Thanks for any assistance on this matter!
Michael
Nokia Lumia 1520 | Windows Phone 8.1 "Lumia Cyan"

Morpheusprime wrote:
Did not work unfortunately... But I have resolved my overheating and battery drain issue...
CORTANA is the culprit and needs to be unpinned from the start screen.
Here is the process if CORTANA is piined already..
1) Unpin CORTANA
2) Go to "Settings.. Applications and open Cortana
3) Turn off Cortana
4) Phone will RESET
5) Go to "Settings.. Applications and open Cortana
6) Turn on CORTANA
DO NOT PIN TO START SCREEN
7) Swipe your start screen over to your applications
8) select CORTANA and allow it to set it self up again.
Now CORTANA is still accessible by the Search icon or from your application menu.
Now your battery.. Before the update my battery was reading "1 day, 14+ hours"
After update After recharge I was getting 14 hours then it would start draining.
After taking CORTANA off the start screen my phone stop getting hot near the camera (Upper left) and after 2 days (Battery cycling) my battery has returned back to reading "1 day, 14+ hours"
My assumption - The matter will be resolved with the Lumia Denim update coming later this qtr.
When that arrives my understanding is CORTANA is off BETA in US. Some additional Firmware tweaking, along with the camera updates and more.. Which "SHOULD" resolve this battery drain & over heating with CORTANA
Per my experience, I believe you're right that Cortana is the culprit for the problem described by the original poster. I unpinned Cortana from my start screen 6 days ago, and so far so good. I have not had a recurrence of that problem. I did not turn Cortana off and then back on again though. I just unpinned it, and that seems to have done the trick.
I'm also hopeful the Windows Phone 8.1.1 and Lumia Denim update will fix this since Cortana will be off Beta in the U.S.

Real Mail Problems On Lumia 1520

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