Some Nokia Lumia Icon users report unresponsive power button after Windows Phone 8.1 update

Nokia Lumia Icon

We know many of you are really happy about the Windows Phone 8.1 Preview for Developers, but some people are experiencing issues with it. To be specific, some Nokia Lumia Icon users are seeing problems with the power button not waking up the device at certain times. We are also experiencing this problem on two of our own Lumia Icons. Are you?

WPCentral forum member carstenosu is the first person to mention the issue. He/she asks, “I'm having issues with my power button not being very responsive. Anybody else experiencing this?”

Other users like MobileVortex have mentioned that a second or third press usually wakes up the Lumia Icon.

If your Lumia Icon does not wake up, you can force a reboot or soft reset. This is possible by holding down the Volume Down and Power buttons together for about 15 seconds or until you feel the phone vibrate. Let’s hope that Microsoft knows about this issue and is preparing a fix for this annoying bug.

Are you experiencing this power button issue on your Lumia Icon after installing the Windows Phone 8.1 Preview for Developers? Let others know in this thread over at the forums and make sure to follow the conversation.



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KrightonX says:

Yep. Can confirm. Only once so far though. Came back on after ten presses.

dhruv07 says:

On twitter joe belfiore tweeted regarding problems on some phone after dev. Prev update

I cant play some online movie videos after update that have to fix it in internet explorer

Cecewp8 says:

My cellular data ain't working. +720

My Lumia 1320 also has the same problem
Some time the power key is not working

alixei says:

Same problem on 920. Periodically, my phone do not switch display off by pressing power button. There's not the only one trouble with dev preview. For example, Sometimes screen do not turning off when I make a call and phone is near my ear.

ghousuddin a says:

This wp8.1 is full of bugs, hope this is not the final release. Where can we report the wp8.1 bugs?

kenzibit says:


Westoncreg says:

So are any of you noticing that the Snap dragon 800 isn't running apps as smoothly as it was on WP 8, this is coming from a 1520 but their nearly identical internal wise

ghousuddin a says:

Opening of apps has gone a lot slower.

vincentchuck says:

Yeah. That's after I moved my words to SD card

roman_hess says:

Yep, experiencing the same here with my 1520

Novron says:

Runs faster if anything on my Icon.

Joseph Avena says:

Running faster on my 920

Yeah, and that's what beta testers do, they report bugs.

ghousuddin a says:

Is there a site where we can report bugs?

Nick Bitter says:

i want to know also i have found alot of issues would be nice to report them with detail to make it easier to figuer out and fix

lippidp says:

Exactly. My 1020 running WP8 GDR3 is great and stable. I will happily wait for 8.1 to come from my carrier along with a Nokia firmware update not because I'm "afraid of technology." On the contrary, I wait because I know too much about technology. I am on the inside and it ain't pretty in here.

My Lumia 920 works better than ever before with Windows Phone 8.1 :-)

sinisfree says:

No it is not.

battery sucks with wp8.1

tallgeese says:

Noticed faster battery drain too.

Yes to battery drain

israelflu says:

the problem is because the WP8.1 make all apps working in background. Go on battery saver, usage and disable the apps that you do not want working in background. Trust me you'll save a lots o battery life doing this.


Platform isnt known for its battery effciency. Battery sucked just as much on WP 8.1

Actually it is, that's why all windows phones have much lower mah than android phones. Or should be, anyway. Noticed less battery on 8.1 myself.

Joseph Avena says:

Mine is draining faster as well however seems to have stablized are two days and two reboots.  Might have been continued reconfiguration issues


larrybon says:

Set your preferred apps to run in background within the battery saver settings. Each one needs to be addressed individually. Many I had set to off were automatically on. Great improvement here!

toraji says:

Great tip Larrybon...thanks!!!! battery drain is my "biggest" issue with 8.1

Nathon Fox says:

How do I set perferred apps to run in background and not all of them on Windows Phone 8.1? I am still fairly new the WP and still learning.

larrybon says:

Settings to battery saver swipe right and set each app as preferred allowed orr not allowed.

Same here with my Nokia Lumia 928. It's honestly faster. Apps open and close in a snap. At first I was a bit alarmed about battery drainage. But after WPCentral's article about background tasks being re-routed to the battery settings. Everything was back to normal once I prevented certain apps from running in the background. Is it possible that WP8.1 is optimized for the older Lumia handsets?

Jordano says:

I think so. Windows Phone has a smooth performance even in low end handsets. I have a Lumia 520 and I didn't experience any issues, just a heavier battery use (nothing absurd, however), after the 8.1 update. MS kept the good old performance and added some groundbreaking features without compromising it. But, problems are expected, since it's a preview; so far, I'm enjoying the update a lot.

Dude my Nokia Lumia 928 hasnt gotten the update yet and idk why lol

Have you enrolled as a developer? This has to be done in order to receive the update.


I'm with you on most stuff but I'm seeing the problem with the power button on my 920.

spinzeroWL says:

My 1020 is working perfectly with 8.1. I certainly wouldn't revert back to WP8.

lippidp says:

I sincerely am happy it has worked out for you, but consider yourself lucky. It would be really great if we could take an image of our phones that we could easily revert back to should something go wrong. Then I would join you with a day one upgrade!

ja_izzy says:

Really?!?!...stfu! You don't know anything.

KMF79 says:

I know exactly what you mean. I'm fine waiting as well. I prefer stability.

hopmedic says:

If this were a beta..... It isn't.

Beta tester is just a term... And it is in a sense.

Fritzly says:

Hasn't WP 8.1 been release to OEMs? If so it is not a Beta.

chmun77 says:

How do you expect developers to work on a buggy DEVEOPER PREVIEW DUDE! Seriously?!~

lowrider2107 says:

It's a good question though, calm down. Is there an official way to report bugs? Would be good to know what's been observed by others already

hopmedic says:

It's the same build sent to manufacturers. Just as with GDR3. It is a preview, not a beta. Bugs are not expected. Possible, yes. Expected, no.

DeCarvalho83 says:

Some ppl like to complaing about everything .. they forgot that little DEVELOPER PREVIEW thing ..

ghousuddin a says:

It's a preview not a beta software test. Tell me if any one finds any difference between lumia icon pre loaded wp8.1 n other phones wp8.1. They might fix these bugs only in the next gdr update

Fritzly says:

I have been a MS Beta tester since Windows 95 and I can assure you that a Developer Preview does not necessarily mean that a Build is a Beta.

Bigrob55 says:

Agreed. Oddly enough this same power button and continued abrupt power cycling had begun happenings the first day after installing 8.1
Thankfully a factory reset cleared all that up for men :)

oneiros says:

Uhm..."windows phone 8.1 is full of bugs" is a false statement..it may have some minor glitches being a developer product, this is pretty obvious and I'm giving for granted that each and every person that installed it is at least aware of the Terms & Condition that they signed...
At least show some decency and respect for people that is working...if you have some useful feedback otherwise if I were you I would reconsider what I have installed on my phone and why..

ghousuddin a says:

Since i ve updated ,
1) my phone got switched off due to low battery within hour despite showing 100 percent battery.
2) i had to do soft reset of my phone to bring it back from switched off state.
3) change of backgrounds of tile not showing the old imagebonly.
4) open app press windows button and immediately try to swipe up, the start screen will not be responsive.
5) loading of store and games app is too slow
6) tiles not refreshing the unread messages info accurately like before.
7) press back to show the opened apps window, u can see a mild line on either side of the open app.
8) bing opens very late as compared to before.

Without me dedicatedly testing if i can find so many bugs within days then imagine how many real bugs might be there. My only concern is can Microsoft fix these bugs in the yet to be released final version, which is only two months away.

Tell me the site where everyone is reporting the bugs, so tat we can report and help make this os better

neither of all these problems r on my 920,820 and 620. ( all upgraded to WP8.1)

my only complaint so far is the music player...its a bit slower than the old one and less functional....also there's lots of "Loading......." at the top. Another thing is that the tile of the music player is no longer live

it has been reported that the old one is still there hidden...hope some developer would create a shortcut tile for it.


ghousuddin a says:

Coz u r not looking at it, try 3,4,5,7,8. If u still cant find it give me ur mail ud i ll send u the snapshot

toph36 says:

Music is an app and an update is coming soon...

Some of these issues dont exist with the 920, and some of them are works in progress that youre marking as bugs, even though theyre unfinished. Bing opens later because it has a new slower animation.

ghousuddin a says:

How do u know they r in progress, do u work for Microsoft?
N regarding Bing it's the time taken before the actual animation starts is slow

@ghousuddin a.... I fortunately can say that I haven't experienced any of the problems you've mentioned. So far so great with my Nokia Lumia 928. Many early adopters are using the Developers Preview for the first time. If it helps, an update was installed before the WP8.1 developers preview which prepared my 928 for 8.1. I'm sure the glitches experienced by many early adopters are valid. However, my Lumia 928 honestly feel like a brand new phone. It's as if I own an Lumia Icon with the "Glance" option.

TheRotfler says:

Minor glitches?? ROTFL

Everybody's phone has different apps, different orders they are installed... a lot of the data was re-configured to work for 8.1... it is possible some of these issues are your apps data problems... a hard reset is always preferable to simply loading on top of the old... it's like "getting a brand new car and cramming it full of the garbage you keep on the floor of your old car"... I would guess that the majority of these issues are solved by a hard reset "about|reset your phone"

My 520 was purchased as just a development phone... although I have a couple apps on it there isn't much there... the only problem is, without a cell connection, cortana doesn't want to work much of the time... bid deal... I develop the toys... I rarely play with them =)

ghousuddin a says:

Settings and games app are system apps , not my garbage apps.

colinkiama says:

Yay 620 wins. No problems here

do you experience any lags with your 620? im still on the fence about updating.

rollindadice says:

it's a developer preview not final release

Novron says:

Same problem here early on, putting it on a charger wired or wireless fixes it. No reboot required. Haven't had the power on problem in over 24 hours though.

The Dane says:

Anybody notice that the sound in headphones stop working in one side? I have that issue on my 925, however restarting it makes stereo work again

PurpleOmen says:

Same issue on my 920! I though it was just a dodgy headphone jack

deathdemon89 says:

I have this headphone issue too, on my 925

vroomi says:

Same problem on 925

HarkAtYou says:

I have this problem on my 1520, I've turned on double tap to wake. Although battery life is suffering badly.

You should go into battery settings and configure which apps are running in the background (formerly known as background tasks). Navigate to "settings> battery saver> swipe to left to access "Usage" then check for any apps that may be running in the background, but aren't a necessity. My battery usage is great even with the glance featured turned on.

poddie says:

Everything I use is working great on my 1020! Wouldn't trade it for the world!!

Same here on my 928..... I'm loving everything about it! By the way, you have chosen a nice time to post :-) [9:28]

andorious says:

Am I the only one experiencing this problem on my L620

hphbp says:

Lumia 620 here, currently downloading 8.1 . Will tell you when it's finished. Been at installation setup for half hour now.

I have been able to wake mine when this happens by using the camera button until it launches.  But yes its annoying.

Also having issues on my Icon. Usually the 2nd or 3rd press gets it.

Icont get my power button to work.

dhaval88 says:

KInternet sharing problem in my Lumia 520,when ever I switch on internet sharing option the network disappeares every time have to switch off and switch on.i face some time internet connection problem when I switchon mobile data,this was not experienced it n windows phone 8,

Honestly though, my phone feels a lot laggier after the update. The battery life seems worse too. I have the 925 though, which only has a dual core processor and smaller battery.

mike004121 says:

Even I think the battery life is worse, Lumia 925.

I have a lumia 925 too and the battery now is worse than iPhone's. Tried everything already and it lasts a maximum of 8 hours (before it used to last at least 26 hours). I just gave up and now I'm using Nokia Recovery to go back to WP8. I hope things get back to normal.

mike004121 says:

My question is, would the final release be the same? I love the new features, but the bugs are so many!

Westoncreg says:

No this still an early build compared to what shipped to OEMs software wise

mike004121 says:

Thank goodness, I hope they squash most of the bugs!

Forrest C says:

I hope so, Dose anyone have any proof of this? The first Developer Preview was the RTM code, or very near it. Windows Phone 8.1 not acting like near RTM code...

mike004121 says:

Also, check your WiFi, the behaviour has changed since 8.1

I disabled most of the background tasks, but that doesn't seem to help too much. It's quite frustrating.

mike004121 says:

What about WiFi?

I don't really use wifi so I disabled the automatically connect features. I set it to turn on manually.

mike004121 says:

I just found another thing, check your email sync settings

I just changed the sync settings. One of them I set to check every 15 minutes instead of as they arrive, so hopefully that will help a little bit.

dorelse says:

wifi connected to a secure network is causing many of us these lockup/unresponsive power button issues.

Turn wifi off and only turn it on to connect to open networks and the power button issues will go away.


bmetelsky says:

This is what I've done and agree that it is a "workaround".

kinaton says:

Battery on my lumia 920 is shocking with 8.0, so glad I didn't do.the update. Nokia are looking at phone soon to sort as they suspect a battery issue. I suspect charging whilst on is the problem

JudgeHolden says:

It's happened on my Icon as well. 2nd or 3rd click will usually wake it, and it's only happened a handful of times. Maybe 15% of my wake attempts.

Adretheon says:

I had an issue similar to this yesterday. My L920 wouldn't close nor would it charge when I plugged it in. It was able to shut off and when I turned it back on it was fine. I wish I was paying attention to what I was doing to see if I could recreate the problem.

igadget says:

Same here.920 didn't charge today and already 2 times the power button would not work.a volume down and power button combo breaker brought me back from deaths doorstep. I'm also having problems with Cortana and Bluetooth. When someone texts me I can reply through my Bluetooth stereo while I'm driving and it hears me fine but if I try to start a new text message it always says it can't hear me. Regardless,I love the update. If they had an option to report problems straight from the phone to Microsoft I would gladly be a beta tester for them.

igadget says:

By the way, completely typed that last message and this message using "swipe" keyboard. I didn't think I would like it but its growing on me. Good show Microsoft.

Roan Grunder says:

My wif'es 920 is completely dead now after installing the update.  Won't restart, won't soft reset and won't hard reset.  This update is cool but this is anot cool... Don't really know what to do.  If they "fix" this problem, how do I fix it on the phone without having to send it in for repairs. Headache!

xerox13ster says:

Hold Volume Down and plug it in. Hold Volume Down until it vibrates or you see on the screen. Then press Volume Up, Volume Down, Power, Volume Down in that order, and wait for it to reboot.


lippidp says:

I hope she's forgiving!

yuvii007 says:

I am experiencing issue with volume down button and camera button on my Lumia 720, doesn't response many time.

Jitendravyas says:

Same here. I'm going to reset my phone.

cursivek1d says:

I have a delayed unlock button only when on Wi-Fi. takes just a couple seconds to light up is all.

Jim_MAY says:

Have to wait on the firmware update from Nokia.

TJccBR says:

Cuz with firmware updates they make sure 100% that all hardware works with the updated sofrware

Aashish13 says:

Some what right too

QilleRz says:

Let's call it the official update release

MagusShadow says:

Does the icon have double tap to wake as an alternative to wake up? I suppose it must be a total lockdown as I'm sure someone has tried to boot up the camera to turn it on, but it's worth asking :-)

TheZuneLune says:

No problems with power on my Icon, so far.

... That's why there's preview. Hopefully they'll fix most of bugs before release thanks to this

kontogsl says:

Had the same issue on my 1520. Full factory reset and a restore completely got rid of the issue.

ZiKhan says:

I had the same problem come up a few times on my HTC 8xt. But has anyone else noticed a decrease in battery performance. I know the 8xt has a terrible battery, but with wp8 update3 I was able to get 12 hours, Now with wp8.1, I'm getting about 6-8 hours. I have about medium usage.

rojar19 says:

There are so many problems with the HTC 8XT after the update like Wi-Fi bugging out after screen goes to sleep.

ZiKhan says:

The funny thing is I haven't had a problem with the WiFi yet (knock on wood). I turn it on and off only if I need to download an app or sync photos. But I guess a firmware update would fix the wifi problem.

dorelse says:

Honestly, once I quit playing with Cortana and all the features, my battery life has pretty much returned to normal, I'm getting 12-14 hrs per charge, compared to 14-16 on 8.0, only needing to charge overnight as usual.


Keep in mind, since I have wifi turned off permanently, battery life would go down, which is why I'm saying its pretty 'normal' on 8.1.


The only issue I'm having is the wifi issue, otherwise, I've been rock solid since turning off wifi.


I would be curious ZiKhan if your battery life improved with wifi turned off...when wifi was on for me, my 8XT was hot and battery life degraded...leading me to believe there's code hung up draining power when wifi is on...just a thought


My 920 has been drainin like crazy since the 8.1 update. Just let it drain completely and see how that works with the next full charge.

abduz says:

Did u try disabling some of the apps running in the background? Mine was draining too but after checking the what's running in the background, i noticed many apps that i don't usually have enabled to run in the background were running, so i disabled them and battery has been lasting longer.

My experience with battery drainage mirrors that of @abduz. Configuring which apps are running in the background worked well for me. Nokia Lumia 928.

zikifer says:

I've noticed much worse battery performance, but I wasn't sure if that was because I'm playing with it more. But yeah, GDR 3 had outstanding battery performance. Now, not so much. Wi-Fi seems to be better though, previously I had to constantly toggle Wi-Fi off and on else it (it would say it was connected but no data would go over Wi-Fi, it had to use cell instead).

stidblom says:

Actually my 1520 is experiencing this as well sporadically:(

babse says:

I have the same issue with my 1520 after updating to 8.1. Figured it is just a bug

RyanAMG says:

Couple posts above he fixed his 1520 by factory reset and restore

My 1520 showed that behavior sometimes too. I use double tap for wake up but for the first 15 seconds i only get 256 colors, after that all colors come back!

Forrest C says:

My 1520 is doing it as well, I have hard reset.... Although i don't recall if it has done it since...

ResonantEcho says:

Actually, this has been happening to me on my 920 even before the 8.1 update. I was hoping the update would fix it. Likewise, my phone will go into charging mode at random times when it's not on a charger or plugged in. Anyone else experiencing the latter?

Forrest C says:

..."my phone will go into charging mode at random times when it's not on a charger"... could be somehting in the charger port or bent connecters... not good, Stuff like that is how people phone battery explode.

kinaton says:

One day Nokia may bring out a phone without bugs or hardware issues. My 920 has issues without 8.1.

Beckie Evans says:

Yes same here. I had issues with the power button on my 625 on 8.0. I also had that issue someone else mentioned with sound only coming out of one headphone, and a soft reset being needed to fix it. I haven't had either issue since the update.

mikeharden says:

I have 2 Lumia Icons and we haven't experienced this issue (yet) on win 8.1. Loving this update by the way!!!!

rydorrin says:

Yes I've been dealing with this and when I power it on sometimes I have to try twice to get it to boot

RobinPaul says:

I had it yesterday and today on my 920 that the screen would just completely freeze and had to do a soft reset. But had to do more than 10 soft resets to use it again for a certain amount of time. After 3 times reinstalling 8.1 it still happend. Did a recovery with Nokia Software Tools and went back to 8.0 (which works fine on my phone) and than i install 8.0 clean (not using back ups) and managed to install 8.1 and so far it's working with a problem (keeping my fingers crossed).

Was annoying tho with the screen freezing up.

nah, It's just a Dev Preview lol

zorb58 says:

Phone is slow to wake up when wifi is on. That is what I've found.

Some features of WP8.1 is very nice but still OS is laggy.. Specially on 512 Mb ram devices.it is not as smooth as older one.

Actually, many people have reported that it is smoother once you do a hard reset, even on the 520. I think its because with a hard reset it gets rid of the 8.0 junk files. You should try it, people are very happy regarding it. Also, remove the (bing) weather app, many people reported that it helps.

eatingjimmy says:

Haven't noticed any lag on my 625.

mgkeath says:

I never found the OS to be laggy before 8.1. The update actually seems even smoother for me on Lunia 822 and 928. I've never owned a WP8 device with only 512 MB of ram, so I can't really give an opinion on those.

WPUser111 says:

No issues yet on lumia 820

cgavula says:

My 1520 is doing this sometimes too, but I can wake it with the double-tap.

WPUser111 says:

I feel like battery is draining rapidly

Montpbm says:

It is and it is draining at an alarming rate for me.

Turn background task for fb off. It'll slow it down

topleya says:

Yup, training like crazy for me as well.

Getting fed up being told to turn off background tasks. I have turned off anything useless, but if I turn of anymore things then the basic principle of live tiles and push notifications will be removed from my phone.

nakialj says:

I have experience this with my Lumia 920.

Jowarman says:

I kinda feel lucky. I have a 925 and I haven't had any glitches with mine yet! Hope I didn't just jinx myself. :/

London Jr says:

I haven't had any issues either, my phone is actually running better, battery life is great now also

Paulo1300 says:

I am also having this issue

Reinherz says:

My Lumia 1020 also encountered that issue.

matfantastic says:

Not only am I experiencing the power button issue, my wifi has gone to crap as well. LTE seems to be unaffected. Did a hard reset already.

Same here I was getting solid WIFI prior to windows 8.1 update now it drops and is wayyyyyy slowere, from about 10 megs a sec to 2.

aniket0303 says:

Similar issue on my L620

trixsta587 says:

I had the same issue with my 920, but a soft reset fixed it!

Same thing with lumia 625.

moc426 says:

Happened a few times on my 1520, double tap unlocked it. Don't think it has happened in a while.

I'm having a similar issue with my HTC 8X. Sometimes I can't lock the screen, all power button will do is turn it off. I have to reboot it in order to fix it. Has happened 2-3 times. I bet it's a firmware issue.

vFlagR says:

Had this issue 2 or 3 times on my 1520, glad its not just me

Dk92 says:

Had that problem with my 928, but on Gdr3.

No problem with my Icon.

rubenbest says:

For me it takes forever to send text messages sometimes and it will get unresponsive for a little bit. 1020 on att

Yes, since the 8.1 update, sometimes on my 1520, the power button does not switch off my screen. Good to know that it's not me only who's experiencing the problem.

same here on my 1520 with 8.1.  has happened 5 or 6 times ove the last few days.

Jabid21 says:

For me, it's just increased battery drain. I guess Cortana needs to be active to be the awesomeness that it is.

piirakka says:

Yep takes like ten presses to work on my Lumia 521

CobraJ82 says:

Same thing with 1520, have to double tap to unlock sometimes.

Kit Fai Ho says:

Goodthing we found this out during Dev Preview, MSFT can fix this.

cmdrrom says:

I can confirm this too. Been happening since day one, but it hasn't been a deal breaker

kc77 says:

I've been experiencing this problem on my 928 about three months before I got the 8.1 update.

It is happening with every Lumia.. Solution :- Select backlight time-out for 1minute or less.. :)

ebk14 says:

Dont even care how off topic this is because the music app SUCKS. An update needs to be released ASAP. Just give me the one from WP 8

TJccBR says:

Nokia Music with playlist creation is all I need.

You can create playlists with Xbox Music on 8.1

Oh the playlist...let me tell about that: Tried to create one and I added all my 220 songs, guess what happened? When I went to the playlist it showed 36 songs added. I said well, this ain't right. I have added all my songs manually by tapping them in groups of 20 and then adding them to the playlist. After I finished I started to listen to the playlist to find out that it will only get 100 songs from it, not all of them. FFS this is an abomination, I can't believe that for 3 years they have the same team for Xbox Music, I would have fired them all. Never seen so much incompetency and bad coding since the first versions of Android. Do they realizes that young people under age of 30 listen to music at least once a day on their phone?

lippidp says:

I'm with you, even though I'm over 30 and old. They need to get music right. This is such a basic feature.

InlineV says:

I'm good with mine so far.

Same issue on Lumia 520 , but so far happened only one

Kdawg1989 says:

I've had this on my 1520 too.

jonnob says:

Had it, hard reset, went away.

Azzatey says:

I have delayed wake up when posting power button sometimes on my Lumia 1520.

cknorthpole says:

On my 1520 as well. Happens every now and then. Need to wait for a few seconds before it responds.

2Suave says:

I am experiencing it quite often on my 1520 :(

bayanii says:

Do you think the bugs are from when people were downloading it. I downloaded mine at 6 am. Right at the release. Maybe because of heavy traffic, codes could have gotten disrupted somehow. Idk.

I don't have issues except Cortana doesn't greet me.

pacolin says:

My 820 with WP 8.1 dev preview has this issue too.

mgkeath says:

Had this happen a couple of times on the 928, but it hasn't happened in a while now. No problems so far on 822.

Axelan says:

It has only happened to me once, Lumia 820

Antluv82 says:

I already knew what Tu do when it freeze

drmps says:

my 1520 is giving a weird popping sound while skipping any video from the slider...did a hard reset twice but it's still existing...

bayanii says:

It could be your shutter.

socalpaisa says:

My Lumia 925's touch screen would stop responding sometimes, though the power button would still function (sorta). My friend's 925 would also stop responding completely sometimes, unable to turn on (or so it appears).

exyaster says:

I'm getting that issue as well, but I'm on the L1520. Good thing there is a camera button.

buggyglint says:

It has happened to my stepbrother on his Lumia 1520 as well.

roystreet says:

I have been experiencing the same problem recently on my Lumia 1520
I just reset my phone for screen "bleaching" issues & so far, the power button is giving me no problem - Strange

rysliv says:

Now I'm kind of glad I don't have a Lumia device.

Poor HTC guys are also having some problems with thier phones ( No cortana outside US )  :) Maybe giving them a shountout will help them out. its not only nokia after all.