Develop Bugs

Phone key pad not re-displaying

I have a google unlocked galaxy nexus phone with JB installed. Sometimes when making a phone call using the dial pad, the display will not turn back on when removed from my ear. Today I was on a call and needed to use the keypad and all I had was a blank display. Nothing I did could get it to display. I had to remove the battery to end the call. Sometimes this happens and all I have to do is tap the power button to bring up the display. Is this a known problem? Is there a setting that I can adjust? Thanks.

Hi jjthenovice,
did you find a solution for this behaviour - I posted a similar experience, but so far nobody responded to my post.
Having the power button set up to end the call is A solution - but not a very good one.

[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

Problem with notification bar pullong down randomly

Hey there
Had the phone since release
Started with this problem yesterday. It's random, the notification bar pulls down and pulls back up within a second. Sometimes it doesn't release, I have to press power button to enable me to use the phone.
I switched on "show taps" in developer options, and it appears to be a screen press from the top centre of the phone. Only from there.
I've tried replacing the screen protector, tried cleaning the phone, power cycles... I've not tried a factory reset at this point, would need to back everything up.
On 8.1
I'm at my wits end
Thanks in advance

Do you have a case installed? Sometimes phone cases trigger phantom touches on the display.

I do, since day one.
Took it off and still get same problem

I'd use a screen capture app to show the phantom touches that's keeping you from releasing the notification bar and contact Support at this point. But yeah, you should begin backing up your data.

try to use the developer menu -> show touches and see if it's software or hardware related

....actually i have been getting random, backspaces key presses.....i am typing away, and than I will sense the "phantom" key press the backspace, and look as my message get completely deleted. Never happened before, same case/same screen protector from DAY1....I just restart my phone, but still wear. happened twice since OREO update

Boot into safe mode and then turn off and start up.
Fixed my menu bar issues.

Don't use interaction control before you read this.

If anyone who doesn't know what interaction control is, it is a built-in feature that can be found in settings->dexternity and interaction | on Samsung phones. It is used to prevent a part of the screen or the whole screen from touching. After you enable it touch interactions won't work on the places you choose.
The best part of this tool is it ignores all the notifications as well as calls. It doesn't let you lock or unlock the device as well as physical or on-screen buttons won't work.
Now the worst part is if you run out of battery after you enable this feature you are in trouble.
For the first time when the phone starts, it asks for the locksceen password or whatever security you put.
The problem is when interaction control is enabled you can't touch the screen nor any buttons will work except back key which doesn't do anything and the power key which basically turns off and on the screen.
You can't turn off or on the interaction control while the screen is locked, and you can't unlock your device while interaction control is enabled.
Basically, your phone is in a loop. The only way to make the phone functioning again is the factory reset.
Even Samsung Customer Representative couldn't help it.
I know it is an extreme condition that it can happen.
But still, beware before using it.

Found this topic while googling for a different issue, but I thought I could shed some light on this. Sorry for the necro
At least on my Note 10+, you can enable and disable the Interaction Control feature by doing one of the following:
A) Hold down the Home and Volume Down buttons together. (Doesn't work if the home button is virtual (on-screen) and is blocked by Interaction Control)
B) Hold down the Side Key and Volume Up buttons Together. (Always works, even when Volume buttons and Side Key button is blocked!)
Edit: Just realized this topic is for the Galaxy A50, but hopefully it will work just the same

[email protected] said:
If anyone who doesn't know what interaction control is, it is a built-in feature that can be found in settings->dexternity and interaction | on Samsung phones. It is used to prevent a part of the screen or the whole screen from touching. After you enable it touch interactions won't work on the places you choose.
The best part of this tool is it ignores all the notifications as well as calls. It doesn't let you lock or unlock the device as well as physical or on-screen buttons won't work.
Now the worst part is if you run out of battery after you enable this feature you are in trouble.
For the first time when the phone starts, it asks for the locksceen password or whatever security you put.
The problem is when interaction control is enabled you can't touch the screen nor any buttons will work except back key which doesn't do anything and the power key which basically turns off and on the screen.
You can't turn off or on the interaction control while the screen is locked, and you can't unlock your device while interaction control is enabled.
Basically, your phone is in a loop. The only way to make the phone functioning again is the factory reset.
Even Samsung Customer Representative couldn't help it.
I know it is an extreme condition that it can happen.
But still, beware before using it.
Click to expand...
Click to collapse
[email protected] said:
If anyone who doesn't know what interaction control is, it is a built-in feature that can be found in settings->dexternity and interaction | on Samsung phones. It is used to prevent a part of the screen or the whole screen from touching. After you enable it touch interactions won't work on the places you choose.
The best part of this tool is it ignores all the notifications as well as calls. It doesn't let you lock or unlock the device as well as physical or on-screen buttons won't work.
Now the worst part is if you run out of battery after you enable this feature you are in trouble.
For the first time when the phone starts, it asks for the locksceen password or whatever security you put.
The problem is when interaction control is enabled you can't touch the screen nor any buttons will work except back key which doesn't do anything and the power key which basically turns off and on the screen.
You can't turn off or on the interaction control while the screen is locked, and you can't unlock your device while interaction control is enabled.
Basically, your phone is in a loop. The only way to make the phone functioning again is the factory reset.
Even Samsung Customer Representative couldn't help it.
I know it is an extreme condition that it can happen.
But still, beware before using it.
Click to expand...
Click to collapse
YES! Do NOT ever activate "INTERACTION CONTROL" unless you KNOW what you are doing or know what that feature is! Unfortunately, IF you are already here, you have probably already activated that feature and don't know what to do, because that is why I'm here too! I accidentally turned this feature on after taking a screenshot! Don't ask me how or why I managed to do it, because I just don't know, I just did. I tried to power off the phone thinking that would help, But I couldn't even do THAT! I was panicking! I was completely LOCKED OUT OF MY PHONE from activating this feature! I only accidentally found how to "disable" the feature pressing and holding the side button and power up button at the same time, like the other poster commented.

jglow said:
YES! Do NOT ever activate "INTERACTION CONTROL" unless you KNOW what you are doing or know what that feature is! Unfortunately, IF you are already here, you have probably already activated that feature and don't know what to do, because that is why I'm here too! I accidentally turned this feature on after taking a screenshot! Don't ask me how or why I managed to do it, because I just don't know, I just did. I tried to power off the phone thinking that would help, But I couldn't even do THAT! I was panicking! I was completely LOCKED OUT OF MY PHONE from activating this feature! I only accidentally found how to "disable" the feature pressing and holding the side button and power up button at the same time, like the other poster commented.
Click to expand...
Click to collapse
The reason you could disable it, the phone was still on. If you run out of battery, it will not allow you to disable it with shortcut keys before you unlock the phone. You can't unlock the phone because the screen is disabled. One way, maybe, is to plug in an external mouse and unlock it if your phone supports it. I don't have my A50 anymore, so I can't test it anymore.

BetaLeaf said:
Found this topic while googling for a different issue, but I thought I could shed some light on this. Sorry for the necro
At least on my Note 10+, you can enable and disable the Interaction Control feature by doing one of the following:
A) Hold down the Home and Volume Down buttons together. (Doesn't work if the home button is virtual (on-screen) and is blocked by Interaction Control)
B) Hold down the Side Key and Volume Up buttons Together. (Always works, even when Volume buttons and Side Key button is blocked!)
Edit: Just realized this topic is for the Galaxy A50, but hopefully it will work just the same
Click to expand...
Click to collapse
You can't do it if your battery dies. The shortcut works if your phone is still on. Once the battery dies and you turn it back on, it will ask for a password before you can disable interaction control with the shortcut, which is stupid since you cannot unlock it with interaction control enabled since the screen is locked. One option might work if your phone supports OTG; you can plug in an external mouse and unlock your phone to disable this feature. It is better to use the pin app future which gives almost the same results. It locks you to the same app even though you can use the screen.

Touchscreen Occasionally not responding

Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.

Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Please upgrade to the newest firmware.

Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Got the same issue on 52.0.A.8.50. Usually opening the app drawer then hitting back solves it - otherwise none of the virtual buttons work.

Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks

bobsright said:
Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks
Click to expand...
Click to collapse
Maybe the Screen Connector wasn't 100% clean.
Or not only the screen is damaged.
I heard that the touch problems are mostly fixed with PIE. The closed source clearpad touch driver is..... Hoping Q gives us an further updated driver.
You still get sometimes ghost touches on higher workload or if the keyboard app is slow, but if you have dead spots the hardware sounds damaged.