screen flashes - Samsung Galaxy A71 Questions & Answers

Hi. The screen on my A71 in UK flashes white for a split second when it turns off. That's when the phone locks, not when the phones is turned off.
Anyone else getting this?
I'm on 1st April software security patch. But it's been doing this since I bought it before the software update.

Related

Screen going black randomly on Z1

I've gotten my Xperia z1 black Friday. Since then the screen has gone black on me about 6 times already... Mind u only had it 1 week.
The screen will go black with no image showing but the black light stays on. Pressing power or any button does nothing. I have to press the red power button near the sim card to have it reset.
Today I its done it 4 times in a row. I did notice that the screen flickered a few times on the image then it went to black image with back light on.
I rebooted it. It showed Sony then just the black screen with no image. I rest the phone again and still nothing. I brought it to the store I bought it from and when I went to show him the back light on but no image and no response from the power it worked Ok. Besides when I turned it off the back light stayed on and the phone was hot.
He turned on the optimized back light option as I turned it off to see if that caused the issues. Now after leaving the store as I had him order a replacement I went to turn my phone on after 20min and I got no back light but the image was there... Extremely hard to see I must add. I went in the settings and turned off the auto dimmer option and my screen was fine since then.
Anyone run into this issue?
I hope if I replace this one for another I won't have the same issue again as this phone is very powerful but this issue is a pain!
Sent from my C6906 using xda app-developers app
andyid said:
I've gotten my Xperia z1 black Friday. Since then the screen has gone black on me about 6 times already... Mind u only had it 1 week.
The screen will go black with no image showing but the black light stays on. Pressing power or any button does nothing. I have to press the red power button near the sim card to have it reset.
Today I its done it 4 times in a row. I did notice that the screen flickered a few times on the image then it went to black image with back light on.
I rebooted it. It showed Sony then just the black screen with no image. I rest the phone again and still nothing. I brought it to the store I bought it from and when I went to show him the back light on but no image and no response from the power it worked Ok. Besides when I turned it off the back light stayed on and the phone was hot.
He turned on the optimized back light option as I turned it off to see if that caused the issues. Now after leaving the store as I had him order a replacement I went to turn my phone on after 20min and I got no back light but the image was there... Extremely hard to see I must add. I went in the settings and turned off the auto dimmer option and my screen was fine since then.
Anyone run into this issue?
I hope if I replace this one for another I won't have the same issue again as this phone is very powerful but this issue is a pain!
Sent from my C6906 using xda app-developers app
Click to expand...
Click to collapse
You will have exactly the same issue, it's a known Xperia bug. You would know it if you goolde it first!
Go to sony forums and that issue is a hot topic, same with the touchscreen issue. I'll never buy a ****ty xperia again.
Yes, this is an Android Bug, not the Device. Before Adroid will work well on the device have to past weeks. I had no backlight but the phone was working because when I was touching the screen he also vibrate because that option was abilitate. I had to reboot the phone few times too and disabilitate Adapt to lighting condition, for me that was making black screen. So I did this few times, abilitate and disabilitate and now no matter what is running well even with all the options abilitate. So I will give it time.
Thanks guys.
I have searched on Google and other sources but the way they describe it is a bit different then what I was seeing. Plus many stated they where not able to get it working till they did the power + vol up and down. I just pushed the reset button inside the sim cover and I was fine.
So far by disabling the auto screen brightness I have not had this issue again.
Hope this is more software then hardware issue and can be fixed by next update. I'm on firmware: 14.1.G1.534.
Bell has not pushed the new update people are talking about when I did searches for it.
Could it be bell is waiting for the 4.4 update instead of pushing a small jellybean update?
Hope it's fixable. I love this phone way more than my slow galaxy note I had before.
andyid said:
...the auto screen brightness....
Click to expand...
Click to collapse
"Adapt to lighting condition" and "Auto Screen Brightness" is the same thing.
Yes I know.. I just did not know the name at the time... That was the first name that came to mind...
So far with the Adapt to lighting condition off, My phone has not acted in anyway described above.
Just wanted to give heads up and report of my findings even thought others may have found it also.
Update your phone to 2.257 firmware, it seems the problem caused by "optimized backlight" thing, since on the 257 firmware the optimized backlight check was gone. I only used the 1.534 firmware for a few hours and flashed 2.257 via flashtool and i never experienced any problem until now for like a month and half
Sent from my C6903 using Tapatalk
My provider, Bell Canada states that the most current firmware is X.X.1.543...
I used sony's update tool and it also stated I had most recent update
This flash tool u are talking about... It states an unlocked device. Do they mean that the device is not carrier locked?
I believe mine is Bell Canada locked but there are no branding on the phone.
Also the software shows a list of compatible phones but the z1 is not in the list...
I think I'm sol if mine is not bootloader unlocked correct?
* Update *
I was able to flash stock unbranded android 4.2.2 and then I was able to update ota to 4.3!
Phone runs great now and I no longer have the screen going black issue when I have the auto screen brightness on!
Phone is super smooth!
Thanks for the tips and help guys!
Can't wait to see the 4.4 when it comes out next yr!
Happy new year to all of you!
Oh and my bootloader is still locked. I found the diy to do it with out unlocking my bootloader.
My phone was rooted when I changed to the unbranded firmware.
It's no longer rooted on the now 4.3

Random problem - Screen not turning off

Hi,
Since upgrading to Tizen a couple of weeks ago, I've had a couple of occassions where the screen has stayed on and not dimmed or turned off.
I only notice it because I get the low battery warning and think it shouldn't be dead so quickly. I then watch it for a bit and notice that it doens't dim or turn off. Changing the screen timeout from 10s to something else and then back doesn't make any difference.
A reboot lets the screen timeout work as normal again.
I probably looked at the watch a few times whilst it was stuck on and just thought that it had been triggered by the movement sensor.
Anyone else have this problem?
Didn't have this problem under Android (had the watch since November last year)

Very slow screen wake-up after last security update

Has anyone experienced slow wake-up after the last update? mine is randomly slow with a black screen and a thick white bar at the bottom before the home screen lights up. Pretty sure it started after the last security update.
No one?
yes same

Maybe someone can help? No display at all, phone works fine.

So I've had this phone since December 24th 2019. It's been RMAd 3 times so far (maybe going into the 4th, started it on the 22nd of June due to what I thought was a dead screen) so since Asus takes so long to repair stuff (I've literally have had it half of the time I've owned it) I decided to just replace it myself since the screen was only 150. So I proceed with the repair and when I'm testing the new screen nothing happens (the phone still turns on like with my other screen, charges and reacts to commands like turning on the flash light or going to the power menu if you hold the power button) So I request a new screen and it does the same thing... Now the chance that both screens were bad from a store with such high ratings is very low so but I'm still hopeful. I purchased another screen that gets here July 7 and will attempt it again but otherwise the only thing I can think of is that one IC or another got fried. I already have the phone opened so I can attempt to put it back together and send it to the Asus to see if they'll fix it but the screen is cracked and I know that after a month with the phone they'll just say "O we don't cover the accidental screen crack" and not take care of whatever the underlying issue is. So if anyone has any idea as to what this could be I'd highly appreciate it.

Samsung A71. Issues with Eye Comfort Shield and Screen Problems.

Samsung A71, OneUI 5, Android 13. In the past few weeks my screen becomes a washed out green for a little while (I can still see the screen, icons, text, etc). Then I have to turn down or turn off the Eye Comfort Shield (ECS). That seems to make the problem go away. Then later on I turn the ECS back on. Then, about 10 days later, it happened again, the screen became washed out with green color. I then turned off the ECS and it went away.
It seems this issue started soon after I got updated to OneUI 5 and Android 13.
I like keeping the ECS on and don’t like turning it off. How to fix this? Anyone else have this issue?
Need any other details?

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