I'm not new to windows phone, but the Camera Button is not waking up the device on my new Lumia 900. I double checked and have the exact same settings set up on my HTC Surround, which is working correctly.
Anyone else have this problem or solution?
Thanks,
Mine doesn't do it either. I just assumed it was designed that way.
ragingclue said:
Mine doesn't do it either. I just assumed it was designed that way.
Click to expand...
Click to collapse
It should most definitely. How long do you hold down the camera button for?
ragingclue said:
Mine doesn't do it either. I just assumed it was designed that way.
Click to expand...
Click to collapse
No, it is not. Microsoft is very pround of the fact that press the camera button can wake up any WP7 phone in any state (other than shutdown) and launch camera app automatically. Try hold the camera button for a few seconds.
foxbat121 said:
No, it is not. Microsoft is very pround of the fact that press the camera button can wake up any WP7 phone in any state (other than shutdown) and launch camera app automatically. Try hold the camera button for a few seconds.
Click to expand...
Click to collapse
this worked for me, i think people are just stoping halfway when they hit the focus click
EDIT: mine only works sometimes
I've tried holding it down for a few seconds, longer than my Surround. I think it's a hardware issue. However, it does work with the lock screen in place. Just not at full sleep.
Dwight2001 said:
I've tried holding it down for a few seconds, longer than my Surround. I think it's a hardware issue. However, it does work with the lock screen in place. Just not at full sleep.
Click to expand...
Click to collapse
You got a point. Holding the camera button down does not work for me. Press, release and press again does. I wonder if theres a setting for that
I can also confirm that it does not work every time. I have to unlock and re-lock, shut off for it to work again. Hope this is fixable in a firmware update.
foxbat121 said:
No, it is not. Microsoft is very pround of the fact that press the camera button can wake up any WP7 phone in any state (other than shutdown) and launch camera app automatically. Try hold the camera button for a few seconds.
Click to expand...
Click to collapse
If the phone has been asleep for a while, it does not work. No matter how many times I depress the camera button and no matter how long it's depressed, it does not work.
It only works if the phone has recently gone to sleep and even then I have to hit it twice sometimes. IDGAF really, doesn't matter to me....
ragingclue said:
If the phone has been asleep for a while, it does not work. No matter how many times I depress the camera button and no matter how long it's depressed, it does not work.
It only works if the phone has recently gone to sleep and even then I have to hit it twice sometimes. IDGAF really, doesn't matter to me....
Click to expand...
Click to collapse
You think this is where those banditos come in?
ragingclue said:
If the phone has been asleep for a while, it does not work. No matter how many times I depress the camera button and no matter how long it's depressed, it does not work.
It only works if the phone has recently gone to sleep and even then I have to hit it twice sometimes. IDGAF really, doesn't matter to me....
Click to expand...
Click to collapse
confirmed
Ok tried rebooting, changing camera button settings and it still doesn't work. Plus with others having the same issue I'm pretty sure it's a defect. Just giving up on the issue isn't a solution so I'll contact Nokia (God knows ATT won't help) and get back here with the results.
Keep in mind this was a selling point - "Smoked by Windows"
Guys... try pressing the button all the way in with some force. It should work. Seems they designed it so it will not accidently get turned on by mistake.
PaullikesWINMO said:
Guys... try pressing the button all the way in with some force. It should work. Seems they designed it so it will not accidently get turned on by mistake.
Click to expand...
Click to collapse
already tried and it wasn't designed for too much force
PaullikesWINMO said:
Guys... try pressing the button all the way in with some force. It should work. Seems they designed it so it will not accidently get turned on by mistake.
Click to expand...
Click to collapse
Ummmm... I feel like "EPIC FAIL!!!", but that worked . Just wasn't use to that with my Surround.
I figured it out
If you press, release, press, release, then press and hold for 2-3 seconds, the camera will start up from a fully closed state.
Mine works every time. No matter how long its been asleep.
I don't have one lol
Sent from my GT-S5360 using XDA
Dwight2001 said:
I've tried holding it down for a few seconds, longer than my Surround. I think it's a hardware issue. However, it does work with the lock screen in place. Just not at full sleep.
Click to expand...
Click to collapse
trick with that camera button wake up: push it fast and hard.
from playing with two wp phones i've owned, i think it's because of the difference between focus press (no wake) and shutter press (wake). problem is they are two stages of the same button. the phone tells the user intent apart by measuring the time from passing first stage of button press (focus) to arriving at bottom of the press (shutter). if it's shorter than a particular value, it wakes the phone. that means you have to press it firm enough to get to the bottom of the press, and fast enough to beat that timer.
if you just press it lightly, it either doesn't get to the shutter stage at all, or doesn't get there fast enough.
it's a bit dumb, because you kinda have to slam that button hard. on the other hand, you don't want to accidentally wake the phone.
Quick press seems to work. Hopefully they fix the timing so it's easier. The Samsung Focus timing was good, and worked every time.
Related
Anyone else accidentally pressed the power button whilst using the HW keyboard? It's a better power switcdh in that it's easier to use, but it's also more sensitive and when I'm holding the phone in two hands and typing, I've accidentally hit the power button a few times.
It's still a million times better than the TP though.
But aren't you supposed to push AND hold it for it to power off? Or do you mean that any slight touch and it turns off the screen?
rb14 said:
Anyone else accidentally pressed the power button whilst using the HW keyboard? It's a better power switcdh in that it's easier to use, but it's also more sensitive and when I'm holding the phone in two hands and typing, I've accidentally hit the power button a few times.
It's still a million times better than the TP though.
Click to expand...
Click to collapse
I've not done it myself no, but it comes up with a warning before switching it off anyway.
I've done it quite a few times .. you accidentally nudge the button and the screen goes blank ..
yeppers, im doing it but am learning not too lol
i'm starting to do this too! quite frustrating sometimes!
I was going to add a poll to see who could clock-up the most accidental-power-switch-whilst-typing hits but I can't see a way.
So I'll start the ball rolling:
3 (so far)
I've done it 7 times since yesterday.
4 of which were in a 10 minute gap last night when I couldn't figure out why my screen was switching off by itself. I was getting ready to RMA it when I remembered this thread and slapped myself.
I've already lost count of how many times I've switched the screen off, really frustrating!!
This is the only niggle I've come accross so far that I cant fix easily... I'll have to chop off my left index finger! lol
Funny. I never accidentally turn it off
I guess it's the way I hold the phone that's different than you guys. Because I can't think of a way why you can accidentally press the power button!
When I have it in landscape mode, I automatically wrap my forefingers around the back section of the phone (much like holding a videogame controller)
This causes the section of my finger closest to my hand to rest on the power button by accident. A small movement of my finger to the right will cause it to press the power button.
I only have problems with the volumebuttons when sliding open the keyboard...
Hi,
I'm going nuts on this, as well. Isn't here any app, that just disables the power button when the keyboard is in use?
Cheers,
Zivi
michaelra said:
Funny. I never accidentally turn it off
I guess it's the way I hold the phone that's different than you guys. Because I can't think of a way why you can accidentally press the power button!
Click to expand...
Click to collapse
What, do you use your feet?
I've had the same problem also quite a few times already. First couple of times I was really scared some contact was loose or something!
I agree on the powerbutton beying annoying
I vote also for some kind of hack, like disable power off when the keyboard is out. As some of you already mentioned.
I turn my phone off a lot when I travel to save power. I've noticed that only doing a quick press turns the phone off from a cold state which is very annoying when i'm just trying to make sure my phone is off like I did in the WM days and currently do with my android device. I'm wondering if this is restricted to my device (HTC 7 Pro) or it affects all WP7 phones.
Does this annoy anyone else? I've written to HTC so if it annoys you too please complain so we can get this changed!
My Focus requires a long press (2+ seconds) to turn the phone on. It sounds like your problem may be HTC-specific, or something is wrong with your particular phone.
Thanks for the head's up, my complaint has been forwarded to the dev department of HTC so hopefully they fix it soon.
my arrive turns in with a short press I think, as well as my tp2 and other HTC phones I've had. doesnt really seem like a big issue to be concerned over. the accidental turn off issue was resolved in the mango beta and powering off really isn't necessary just a switch to airplane mode or enabling battery saver.
Unless I misread the OP, his concern isn't with accidentally turning off the phone, but accidentally turning it on, since it seems that accidentally bumping the power button on an HTC phone will turn it on.
RoboDad said:
Unless I misread the OP, his concern isn't with accidentally turning off the phone, but accidentally turning it on, since it seems that accidentally bumping the power button on an HTC phone will turn it on.
Click to expand...
Click to collapse
and I've told him that it's not necessary to do that in wp7. I don't get people, first they were complaining about the power button being too hard to press now it's the other way around.
l find that if you wanna check your phone..rather than pressing the power button press the camera button. If its on it'll go to the camera app. If its off it'll stay off.
I have never complained about the power button being too hard, I just checked and my TP2 does this too which is annoying. It's really not a difficult thing to implement and I should be able to conserve as much battery as possible without having to resort to flight mode only.
For now I'll use the camera button idea (thanks!) however ironically enough I have to long press the camera button to see if it wakes up, go figure...
Q&A is that way.... ---->
Sent From My Fingers To Your Face.....
When my phone is locked (screen turned off), the volume rocker and camera buttons don't work. With my Samsung Focus, I could use both while the screen was completely locked. Is anyone else experiencing this?
For camera button, there is a setting (in Settings->Camera) to turn it on or off while sleep/locked.
My camera button doesn't wake the phone if I force sleep while in an app, such as the xda app. If I force sleep from the home screen, I'm alright. If I leave the app in the background, it works OK. However, like some others have stated, in order for the camera to wake the phone, you have to make sure you're not spending time on the intermediate position of the button, it has to be pressed all the way down quickly. If you take too long to do it, the camera will not wake the phone.
At least, this is how it is behaving for me.
Setting's correctly set, and I have been pushing it down all the way and holding it... Sometimes it does work, but there doesn't seem to be a pattern. Maybe my device is defective.
Anyone able to adjust the volume settings with the screen off?
Same with my camera button. After update, it's about 85% accurate. Before, it was 25%.
Volume does not work when off.
PS: Samsung Focus 1st gen doesn't allow Volume when screen is off, unless you applied some hack or custom ROM that did that. I just turned mine back on and tested to be sure.
I think what you remember is that when the Lock Screen was active, you could use the Volume Rockers, and that still works on the Lumia.
Huh, maybe I was just remembering wrong...I'll have to test it when I get home tonight...
Hi,
I can confirm operations as described above. With the phone locked, the volume rockers do nothing. You have to press the standby/lock button in order to get the screen to come on, and then you can use the volume rockers.
I have not tested this with my HTC HD7 on TMO, but will and get back to you.
As far as the camera button waking up a locked Lumia 900, you have to press and hold the camera button for a second and then press it again in order to get the camera app to load if the screen is locked. This won't work if the option under "Settings --> Applications --> pictures+camera--> Press and hold camera button to wake up the phone" is set to off.
Again, it isn't a simple tap, you have to hold it down for a second, and then press it again a second time for another second or two and the camera will turn on.
You'll see a little pad lock in the lower left if you have the phone horizontal and in the upper left if you have it vertical.
I don't know if this is how all the Lumias work, but it is how I can get the camera app to work when the phone is locked.
TB
This, among other detrimental things, have just started happening on my 900 today. It worked fine for the last 5 weeks & now it's become pretty much ****. Would rather trade it in for a Titan II than do an unreliable hard reset.
Sent from my Lumia 900 using XDA Windows Phone 7 App
While locked and screen off my volume rocker and camera buttons do work, same as my HD7.
JonnieLasVegas said:
This, among other detrimental things, have just started happening on my 900 today. It worked fine for the last 5 weeks & now it's become pretty much ****. Would rather trade it in for a Titan II than do an unreliable hard reset.
Sent from my Lumia 900 using XDA Windows Phone 7 App
Click to expand...
Click to collapse
An unreliable hard reset?? You had me there until you mentioned an HTC device. Reliable does not include the letters H-T-C.
Well said. Sure wish I could quote again. Come on Board Express. Fix what you broke damnit.
Sent from my Lumia 900 using Board Express Pro
aquanaut88 said:
While locked and screen off my volume rocker and camera buttons do work, same as my HD7.
Click to expand...
Click to collapse
Same here (except the HD7 part, of course). I do find I have to press the volume rocker once, then hold it down in order to change volume, which strikes me as being by design to avoid accidental presses.
Concur with lowlymarine... 2nd press needed on the lumia 900. 2nd press not needed the HD7... slight nusiance, like a dialog box popping up asking 'are you sure?'
Hi.
my power button has been recently broken and I wish to use the search button as a power button.Is there any way I can accomplish this?.Please someone guide me.I am currently running SHADOW ROM v1.
Thanks.
hacker804 said:
Hi.
my power button has been recently broken and I wish to use the search button as a power button.Is there any way I can accomplish this?.Please someone guide me.I am currently running SHADOW ROM v1.
Thanks.
Click to expand...
Click to collapse
Not possible. With the power completely off.... The capacitive keys won't work.
Your options can be found in some custom roms, or kernels for waking the device tho.
There's sweep to wake, found in some kernels.
Or volume button to wake. Found in some roms. You'd have to read the opening posts or ask in those threads to see which have those options.
If your device is powered off tho.... I'm not sure if pulling the battery and putting it back in starts the phone or not.... Been awhile.
Either way... You're in for lots of inconvenience. Personally... I'd phone shop. Used phones are a cheap option.... The Moto G or E are very cheap... Brand new. The S2 is pretty old now.... Paying to have it repaired is an option... But the money is probably better spent towards an updated phone.
Just my opinion. ?
Well I managed to remap the search button as the power button but you are right it does not work when the phone is in sleep.I am using Shadow ROM and it has the volume wake option so I use the volume buttons to wake the phone and the search button to put it to sleep.It's a little inconvenient but it works.The only problem I could face would be that if the phone somehow hangs and I have to turn it off by taking out the battery then it will not turn on without plugging in the charger.I just hope this situation does not come.
I think I will run this S2 for a few months and then move on to some other phone.Right now I am thinking of a Windows phone such as Lumia.
Can you also tell your opinion about that?
Thanks for the reply.
hacker804 said:
Well I managed to remap the search button as the power button but you are right it does not work when the phone is in sleep.I am using Shadow ROM and it has the volume wake option so I use the volume buttons to wake the phone and the search button to put it to sleep.It's a little inconvenient but it works.The only problem I could face would be that if the phone somehow hangs and I have to turn it off by taking out the battery then it will not turn on without plugging in the charger.I just hope this situation does not come.
I think I will run this S2 for a few months and then move on to some other phone.Right now I am thinking of a Windows phone such as Lumia.
Can you also tell your opinion about that?
Thanks for the reply.
Click to expand...
Click to collapse
See my signature. No windows phones. Lol
I know the one Lumia had an awesome camera... 1020 or something. But mediocre reviews on the rest of the phone. And using that camera apparently destroys the battery life. Lol
Also, windows "apps" have a long way to go. Compared to Apple and Android anyway.
But... To each their own. ?
hacker804 said:
Well I managed to remap the search button as the power button but you are right it does not work when the phone is in sleep.I am using Shadow ROM and it has the volume wake option so I use the volume buttons to wake the phone and the search button to put it to sleep.It's a little inconvenient but it works.The only problem I could face would be that if the phone somehow hangs and I have to turn it off by taking out the battery then it will not turn on without plugging in the charger.I just hope this situation does not come.
I think I will run this S2 for a few months and then move on to some other phone.Right now I am thinking of a Windows phone such as Lumia.
Can you also tell your opinion about that?
Thanks for the reply.
Click to expand...
Click to collapse
My honest opinion:
I hate windows 8 anything (lol) especially their phones. Apple iPhone is ehh, but better than windows. Everyone seems to love their OnePlus One's and the LG G3.
Sent from my SGH-T989
M8...far and away the best phone I've owned.
EDIT: Fixed it (for now). Copied from my post on site 2.
What's up guys, I'm sorry for the late followup. It turned out, that I was too lazy to send it back. Now, almost a year later, I'd gotten into fixing phones and got the courage to open up the device and see what's up with the power button. It felt like the issue has been a bit less noticeable recently but I checked the replacement parts prices and how to open our phone up.
I think I've fixed the issue by adding one layer of electrical tape over the button-contact. I believe the issue is that the pin a just a little bit too short to reliably properly click the button.
Short tutorial:
Turn the device off and remove the simcard bracket.
It's actually super easy and you don't need to screw or remove anything. Google "Xiaomi MI A2 LITE disassembly screen battery smontaggio" you'll find a video, in the beginning the guy shows how to remove the backcover. I've used a hard, plectrom-looking "opening-pick" at the bottom, then carefully but firmly around the sites. You don't even need to remove the flex cable from the back, just make sure you don't rip it off. Cut off a short bit from the electrical tape, tape it from the battery to the contact, so it doesn't fall off. Close the case again, turn it on and check whether the powerbutton still clicks (doesn't stick) and test the screen lock. Post back if this has worked or if you've tried it.
Click to expand...
Click to collapse
Does anybody have a similar issue?
I've ordered the device from gearbest to Europe. Everything worked nicely.
However, recently when I hit the power button it sometimes triggers the double click interaction and opens my camera. I've tested a few ways to press it slightly from the side, with more force or less. However it will 1/3 times vibrate and start the camera like I had double clicked it, it's more likely when I hit it a bit too lightly though. Could it already be worn out after 2 months? This never happened when the device was new as far as I ran remember.
Yes I'm aware that I could change the camera shortcut but this doesn't stop me from worrying about whether my powerbutton will give out soon.
I was using the phone happily in the case Xiaomi has provided. Dropped the phone once and got a little scratch on the VOL Button but other than that, nothing crazy has happened. Does anyone have a clue whether they will still replace it? I'd gotten it in mid-August.
<message deleted>
Buttons are usually the main gate to "planned obsolescence". I bought this device after my nexus 5 power button started working funny (I physically removed it and worked only with gestures). So, now I try not to press the button unless necessary. I unlock with fingerprint, and lock with Greenify.
In other words. Make sure of it, if the button starts working funny, I'd file a warranty claim. Or it won't last long and warranty will expire eventually. It can happen with this device and with any other piece of tech.
My opinion.
If you do place a warranty claim, let us know how xiaomi's customer service works in Europe.
needhelpgeez said:
Does anybody have a similar issue?
I've ordered the device from gearbest to Europe. Everything worked nicely.
However, recently when I hit the power button it sometimes triggers the double click interaction and opens my camera. I've tested a few ways to press it slightly from the side, with more force or less. However it will 1/3 times vibrate and start the camera like I had double clicked it, it's more likely when I hit it a bit too lightly though. Could it already be worn out after 2 months? This never happened when the device was new as far as I ran remember.
Yes I'm aware that I could change the camera shortcut but this doesn't stop me from worrying about whether my powerbutton will give out soon.
I was using the phone happily in the case Xiaomi has provided. Dropped the phone once and got a little scratch on the VOL Button but other than that, nothing crazy has happened. Does anyone have a clue whether they will still replace it? I'd gotten it in mid-August.
Click to expand...
Click to collapse
when you dropped it
the power button may have got stuck
this is possible and I've seen it on some other devices
you can open it yourself if you don't care for warranty like i do
but the safest option is to claim warranty and yes they would replace it
needhelpgeez said:
Does anybody have a similar issue?
I've ordered the device from gearbest to Europe. Everything worked nicely.
However, recently when I hit the power button it sometimes triggers the double click interaction and opens my camera. I've tested a few ways to press it slightly from the side, with more force or less. However it will 1/3 times vibrate and start the camera like I had double clicked it, it's more likely when I hit it a bit too lightly though. Could it already be worn out after 2 months? This never happened when the device was new as far as I ran remember.
Click to expand...
Click to collapse
I have the exact same issue. It started when I installed the Oreo update, but it could be a coincidence. I'm still looking for a fix.
It also happens to me, and I didn't drop the phone... Is there a way to change the shortcut to, maybe, press the power button 3 times instead of 2?
Enviado desde mi Mi A2 Lite mediante Tapatalk
ovejota said:
It also happens to me, and I didn't drop the phone... Is there a way to change the shortcut to, maybe, press the power button 3 times instead of 2?
Enviado desde mi Mi A2 Lite mediante Tapatalk
Click to expand...
Click to collapse
It happens to me too, I disabled the shortcut and just not using it right now. I don't think there is a way to change the shortcut
It happens to me....
It happened for me as well.
And i think it's a software bug, not hardware..
avi_soft said:
It happened for me as well.
And i think it's a software bug, not hardware..
Click to expand...
Click to collapse
Same here, never crashed on the floor, it's software issue
sinthemau said:
Same here, never crashed on the floor, it's software issue
Click to expand...
Click to collapse
It obviously is not a software issue. This means that they've used cheap contact points on the button if this happens to many of us. This is a hardware issue.
marstonpear said:
It obviously is not a software issue. This means that they've used cheap contact points on the button if this happens to many of us. This is a hardware issue.
Click to expand...
Click to collapse
I'm having this issue since day one. It is obviously software, otherwise the same contact problem would occur when turning the screen ON, but it never happens. Solution is to disable the feature under System -> Gestures -> Jump to camera.
i also dissabled the camera gesture because of this issue.
im sure this is reasoned by a more or less loose power button and not an software issue
fugu5 said:
I'm having this issue since day one. It is obviously software, otherwise the same contact problem would occur when turning the screen ON, but it never happens. Solution is to disable the feature under System -> Gestures -> Jump to camera.
Click to expand...
Click to collapse
How can that be a software issue? Same issue happens to me whenever I use the power button, either to lock the screen or unlock the screen. Also if it was a software issue, it could be fixed via installing a GSI. That doesn't fix it either.
marstonpear said:
How can that be a software issue? Same issue happens to me whenever I use the power button, either to lock the screen or unlock the screen. Also if it was a software issue, it could be fixed via installing a GSI. That doesn't fix it either.
Click to expand...
Click to collapse
Let me break it down and you can tell me if I'm missing something.
1. Many users are reporting that the camera app starts when pushing the power button to turn the screen off.
2. They are not reporting any other issue with the power button, like the camera app starting when they try to turn the screen on, the button being irresponsive, or the camera app NOT starting when they deliberately push the button twice.
3. The problem reportedly goes away if the double-push gesture is turned off in settings.
Do you still think this is a hardware issue?
fugu5 said:
Let me break it down and you can tell me if I'm missing something.
1. Many users are reporting that the camera app starts when pushing the power button to turn the screen off.
2. They are not reporting any other issue with the power button, like the camera app starting when they try to turn the screen on, the button being irresponsive, or the camera app NOT starting when they deliberately push the button twice.
3. The problem reportedly goes away if the double-push gesture is turned off in settings.
Do you still think this is a hardware issue?
Click to expand...
Click to collapse
When I disable double press gesture from Gestures, still when I sometimes hit the power button, the phone locks and closes the screen and then turns the screen on again which means that it still registers one presses sometimes as double presses. Also if you've ever used a keyboard or a mouse or anything electrical with buttons on it, these appliances do the same sometimes even though you tap one button they sometimes register it twice. Which is a hardware issue. I still can't see any software issue here. When you disable the double press gesture, it doesn't launch the camera anymore but it turns on the screen after locking it (sometimes as usual)
marstonpear said:
When I disable double press gesture from Gestures, still when I sometimes hit the power button, the phone locks and closes the screen and then turns the screen on again which means that it still registers one presses sometimes as double presses. Also if you've ever used a keyboard or a mouse or anything electrical with buttons on it, these appliances do the same sometimes even though you tap one button they sometimes register it twice. Which is a hardware issue. I still can't see any software issue here. When you disable the double press gesture, it doesn't launch the camera anymore but it turns on the screen after locking it (sometimes as usual)
Click to expand...
Click to collapse
Not for me, so it's possible that these are actually two different problems with this phone. I wouldn't be surprised. :laugh:
fugu5 said:
Not for me, so it's possible that these are actually two different problems with this phone. I wouldn't be surprised. :laugh:
Click to expand...
Click to collapse
Yeah me neither. They don't look like they're going to fix anything or listen to users either. I'm happy with stock Android though.
Hi guys, for me, the problem has fixed disabling the option "Power button lock the phone", and set the option "Lock automatically": immediately.
The fix
What's up guys, I'm sorry for the late followup. It turned out, that I was too lazy to send it back. Now, almost a year later, I'd gotten into fixing phones and got the courage to open up the device and see what's up with the power button, without disabling the functionality. It felt like the issue has been a bit less noticeable recently but I checked the replacement parts prices and how to open our phone up.
I think I've fixed the issue by adding one layer of electrical tape over the button-contact. I believe the issue is that the pin a just a little bit too short to reliably properly click the button.
Short tutorial:
Turn the device off and remove the simcard bracket.
It's actually super easy and you don't need to screw or remove anything. Google "Xiaomi MI A2 LITE disassembly screen battery smontaggio" you'll find a video, in the beginning the guy shows how to remove the backcover. I've used a hard, plectrom-looking "opening-pick" at the bottom, then carefully but firmly around the sites. You don't even need to remove the flex cable from the back, just make sure you don't rip it off. Cut off a short bit from the electrical tape, tape it from the battery to the contact, so it doesn't fall off. Close the case again, turn it on and check whether the powerbutton still clicks (doesn't stick) and test the screen lock. Post back if this has worked or if you've tried it.
I changed the power/volume button assembly outright just the other day, and so far I'm not getting this issue anymore.
I recorded myself doing it here, so you can see how easy (or hard) it is: https://youtu.be/q8kaY-v0q_Q