Develop Bugs

[Q] Universal Switch enabled, screen unresponsive

So I activated Universal Switch on S6 Edge to check it out, something went wrong in the settings (long story short, got a pop up while setting it up), now screen unresponsive.
It works, I just get this blue horizontal line scanning the screen and nothing else but the power button and home button works. Tried safe mode, no bueno. How can I disable US feature without resetting to factory or at least no data wipe (if possible!)?
Android 5.0, rooted with pingpong, no custom recovery, knox 0x0.
All help is appreciated.

Same
[The exact same thing just happened to me someone please help

Fixed!
The way I had fixed this is by holding down the power button, both up and down sound buttons, and the home button until it restarted. When the device turned back on it gave the option to turn the setting off. Hope it helped!

ImJustBoss99 said:
The way I had fixed this is by holding down the power button, both up and down sound buttons, and the home button until it restarted. When the device turned back on it gave the option to turn the setting off. Hope it helped!
Click to expand...
Click to collapse
it works , thanks so much buddy , i love you:good:

how to turn off universal switch
hit home button 3 times

Thanks alot
It worked buddy

It doesn't give me the option to turn it off

Hi,
I have been struggling with Universal Switch on a Samsung S5 Neo. I switched it on, but was never able to switch it off again.
These are findings so far:
-> Did a factory reset using "Sound Up", "Home" and "Power" button simultaneous.
-> The device comes back and wants to configure itself again.
-> I restored my settings from Google, but this immediately brought back "Universal Switch"
-> Factory Reset again and configured the device, but told Google that I want to use it as a "New Device".
-> Now I can use my device in a proper way.
-> In Google Play Store I find all my Apps which were linked to my account and reinstalled them and I am back in business again.
-> Took me half a day to sort this out.
The programmer who designed and programmed this should be hung and shot and poisoned, because this is absolute Crapware.
Hope this helps for all the others who are suffering.

You can also push the home button three times and it should turn it off.

thank u ur the best

Ok, so i have exactly the same problem except my home button doesn't work
Anyone one know how to sort this without having to take it in to a store?

I was faced with this problem before and looked everywhere and couldnt find a fix. This was a while ago. So I dont remember what I did to clear it. I was cleaning off the screen and touched the home button as I was wiping it off and the problem began again.... I just came across your comment because all the others failed. I pressed the home button 3 times quickly and the blue lines stopped scrolling. In addition, I went over the accessibility and I turned off the "Universal Switch" option as much as the option allows. I hate this function. I do not use it or need it (for my needs). I hope I can remember what to do next time this happens. I swore to myself I would remember last time, but apparently that wasnt a guarantee. This time, I will write it down and put is somewhere I know I will find it next time I see these nefarious blue lines scrolling. Hopefully I wont see it again since I disabled it more than it was to begin with. Thank you ever so for commenting. You saved me a lot of frustration!

great fix
CarlyCraig said:
hit home button 3 times
Click to expand...
Click to collapse
thank you for posting the only sollution that works.

Hello,
I have activated Universal Switch option Screen - Volume Increase button on S6 Edge upgraded version of android 6.0 and but it messup everything.. I am now unable to access any feature on screen.. none of the button are working on screen.
I have also tried rebooting it with the option suggested by you.. but I am locked due to password protected... My device not asked to disable Universal Switch option after reboot as well..
Please help, how to get this Function Disable, without affecting my data as I do not wish to loss any of my data..

So what the heck is that scanning blue line option supposed to do?

My home button is not working, now tell me how do i get out this situation

Akki167 said:
My home button is not working, now tell me how do i get out this situation
Click to expand...
Click to collapse
Have you tried pressing it rapidly three times?

It happens to me too, have you solved this problem? Please tell me what to do im freaking out right now

me too @Alifanasya
same issue

it works with OTG cable + mouse

Home button issues

Has anyone else had the home button stop working? It has happened to me twice and a reboot restores it. I'm running the stock US Unlocked but rooted RUU.
Sent from my HTC 10 using Tapatalk

fmedrano1977 said:
Has anyone else had the home button stop working? It has happened to me twice and a reboot restores it. I'm running the stock US Unlocked but rooted RUU.
Sent from my HTC 10 using Tapatalk
Click to expand...
Click to collapse
I've got the same problem. It worked after a reboot when I first got the phone. I put it in extreme power saver mode the next night and when I went back to standard mode my home button wouldn't work. I'm running everything stock, I'm on T-Mobile, I've tried updates, reboots, and a factory reset. Nothing has worked. I read a thread about an older HTC phone that said clearing the cache on HTC Sense worked for them but that didn't help for me either.

fmedrano1977 said:
Has anyone else had the home button stop working? It has happened to me twice and a reboot restores it. I'm running the stock US Unlocked but rooted RUU.
Sent from my HTC 10 using Tapatalk
Click to expand...
Click to collapse
Best thing to do is to send it back for service. In my country (Belgium) HTC has great service. The sooner the better!

I've figured it out. How to fix the finger scanner /home button.
Start in your settings.
Then to apps. In apps hit the soft key in the top right corner of the screen. A new window will open up. Tap "show settings" this will show finger scanner app. Scroll down and tap on that app. Now tap "force stop". After this back out to home screen and restart your phone.
This should fix the problem. I had the same issues with my HTC 10. The scanner/home pad not working at all and no longer showing up in the "settings". I tried calling HTC customer care and did a hard reset..... 4x plus did a complete wipe and recovery. But that wouldn't fix the issue as well. So the other day I followed the top description. Now it works with no glitches.
Hope this helps you out.

Aftermk said:
I've figured it out. How to fix the finger scanner /home button.
Start in your settings.
Then to apps. In apps hit the soft key in the top right corner of the screen. A new window will open up. Tap "show settings" this will show finger scanner app. Scroll down and tap on that app. Now tap "force stop". After this back out to home screen and restart your phone.
This should fix the problem. I had the same issues with my HTC 10. The scanner/home pad not working at all and no longer showing up in the "settings". I tried calling HTC customer care and did a hard reset..... 4x plus did a complete wipe and recovery. But that wouldn't fix the issue as well. So the other day I followed the top description. Now it works with no glitches.
Hope this helps you out.
Click to expand...
Click to collapse
Thank you so much, worked like a charm!
Edit: WORKED like a charm for boot up and a few minutes, but then stopped again. I assume I have a software interference issue...

Help
I also have this problem now both my home and finger sensor stopped working. I did a factory reset it worked for a bit and it stop working again. Please help.

Hi,
Similar thing happen to me but instead of the finger print my back button and recent app button stop working. The problem starts after i turn on the extreme power server and turn back off. I have tried hard reset and it will only work for few hours and then the same issue comes up. But i have notice if i open google maps both buttons work. I have not rooted the phone. Dose anyone knows how to fix this issue?.
OS : 6.0.1
Build: 1.95.401.4

Did you try to rescan your fingerprint from different positions. And another thing when used to fingerprint. Do you use smartlock setting? I mean maybe it detects you are in a trusted area and you do not even need to unlock it with fingerprint? Then it just shows the lockscreen when you tap it.
Greetings,

Same issue
asankamadushan said:
Hi,
Similar thing happen to me but instead of the finger print my back button and recent app button stop working. The problem starts after i turn on the extreme power server and turn back off. I have tried hard reset and it will only work for few hours and then the same issue comes up. But i have notice if i open google maps both buttons work. I have not rooted the phone. Dose anyone knows how to fix this issue?.
OS : 6.0.1
Build: 1.95.401.4
Click to expand...
Click to collapse
I have this issue as well - and when I open google maps it works fine from there... Possible that it works from other apps but at other times they are really unresponsive. Did you ever fix your problem?
UPDATE - I just turned extreme power saver mode on then off and it seems to have fixed the issue for the moment...

OMG works!
Aftermk said:
I've figured it out. How to fix the finger scanner /home button.
Start in your settings.
Then to apps. In apps hit the soft key in the top right corner of the screen. A new window will open up. Tap "show settings" this will show finger scanner app. Scroll down and tap on that app. Now tap "force stop". After this back out to home screen and restart your phone.
This should fix the problem. I had the same issues with my HTC 10. The scanner/home pad not working at all and no longer showing up in the "settings". I tried calling HTC customer care and did a hard reset..... 4x plus did a complete wipe and recovery. But that wouldn't fix the issue as well. So the other day I followed the top description. Now it works with no glitches.
Hope this helps you out.
Click to expand...
Click to collapse
can't thank you enough you just saved my day! I even registered on this forum just to thank you!

Power Button worn out? Accidentally starting Camera despite clicking it only once.

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

Question Launch Google Assistant with Home Button

Anyone know how to activate the Google Assistant by holding the home button with 3-button navigation. I've been able to do that for years on my Pixel 3, but I can't seem to find that setting on the Pixel 6 Pro.

theGekkoST said:
Anyone know how to activate the Google Assistant by holding the home button with 3-button navigation. I've been able to do that for years on my Pixel 3, but I can't seem to find that setting on the Pixel 6 Pro.
Click to expand...
Click to collapse
Not exactly a reply to your question as such, but perhaps you could use the quick tap to launch Google assistant or long press power menu. Whilst not the home button these are the two ways I'm aware of.
If you're rooted there may be another way via Gravitybox but unsure of A12 is supported so the A11 version may not work properly/at all.....

theGekkoST said:
Anyone know how to activate the Google Assistant by holding the home button with 3-button navigation. I've been able to do that for years on my Pixel 3, but I can't seem to find that setting on the Pixel 6 Pro.
Click to expand...
Click to collapse
Did your Pixel 3 still have that ability after Android 12? I would guess they took it out with that update since they added holding the power button. There's still the swipe from the bottom corners option too.

EeZeEpEe said:
Did your Pixel 3 still have that ability after Android 12? I would guess they took it out with that update since they added holding the power button. There's still the swipe from the bottom corners option too.
Click to expand...
Click to collapse
Sadly my Pixel 3 got the Black Screen of Death three weeks before Android 12 was release.

theGekkoST said:
Sadly my Pixel 3 got the Black Screen of Death three weeks before Android 12 was release.
Click to expand...
Click to collapse
Sorry to hear that. So from what I can tell, with 3-buttons, it looks like they want those users to do the hold power button. The corner gesture is only available with system gestures on.

Question Touch/swipe delay on Poco F4

For a while, I've been trying to figure out how to word this touch/swipe issue I'm having with my POCO F4. But now, I'm able to reproduce this, and hopefully this will help in identifying the problem.
1. Press and hold the screen with one finger.
2. Press and hold the screen with another finger, without moving the first one.
3. Release the first finger.
4. Slowly swipe with the second finger.
There is a noticeable delay in when the swipe actually happens in this case.
This has not happened in my previous device (Redmi K20 Pro), and I'm having the same issue in stock and EU roms (MIUI) as well as ArrowOS (AOSP). Is there anything I can do to fix this issue?

RyuXIII said:
For a while, I've been trying to figure out how to word this touch/swipe issue I'm having with my POCO F4. But now, I'm able to reproduce this, and hopefully this will help in identifying the problem.
1. Press and hold the screen with one finger.
2. Press and hold the screen with another finger, without moving the first one.
3. Release the first finger.
4. Slowly swipe with the second finger.
There is a noticeable delay in when the swipe actually happens in this case.
This has not happened in my previous device (Redmi K20 Pro), and I'm having the same issue in stock and EU roms (MIUI) as well as ArrowOS (AOSP). Is there anything I can do to fix this issue?
Click to expand...
Click to collapse
If you turn on performance mode this issue will gone.

OSAL said:
If you turn on performance mode this issue will gone.
Click to expand...
Click to collapse
There is no such option in ArrowOS, which is what I'm using right now.

Update: I have rooted and installed NGK in my phone with Arrow OS, and this issue still persists.

I've attached a video of the issue. Note the delay in move/swipe detection when the right finger is moved after lifting the left finger.