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SM - G780G - Screen flickers

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gabi11

Senior Member
Dec 13, 2011
595
311
Hi all,

My wife just bought the G780G.
I configured her device using Samsung smart switch, and used it to transfer settings, apps and data from her old S8 (first time I did it, usually I prefer to start a new device from scratch...) .

She says she has an issue with the device - sometimes, while using it, the screen flickers...
I didn't see it exactly and she didn't manage to reproduce it to show me, but she says it happens to her quite a lot.

Anyone familiar with this issue?
Any solution you know of?

Thanks!
 

3mel

Senior Member
Aug 23, 2012
1,393
409
London
long shot, if she uses chrome try updating it and android webview along with it. there was an issue months back where that caused system wide flickering and some apps not to work.
 

gabi11

Senior Member
Dec 13, 2011
595
311
long shot, if she uses chrome try updating it and android webview along with it. there was an issue months back where that caused system wide flickering and some apps not to work.
I updated Chrome.
No update was needed for Android web view.

Unfortunately it didn't help.
The issue persisted today...

I suspect 2 things:
1. A firmware update that was done yesterday morning (my wife doesn't remember if she encountered it before, she have the phone for 2 days...)
2. Restoring data using smart switch - it can cause issues? I restored the data from her old S8.

Can it be that some corrupted data was transfered?
I'm thinking of factory reseting her device and let her start from scratch..

What do you think?
 

3mel

Senior Member
Aug 23, 2012
1,393
409
London
before you reset try booting to recovery and clearing cache. if there was an update it could be the cache. if it doesn't help then yeah reset is the next option.
 

gabi11

Senior Member
Dec 13, 2011
595
311
before you reset try booting to recovery and clearing cache. if there was an update it could be the cache. if it doesn't help then yeah reset is the next option.
Thanks man

How exactly to boot to recovery?
I tried after watching several YouTube videos but had no luck...

Edit : looks like something is messed up with this phone.
I'm not able to boot into recovery.
Doing this:
Turn off device
Press volume up + power button simultaneously.
As soon as I see the Samsung fe logo - I release the buttons - the phone boots regularly...
 
Last edited:

nunein

Senior Member
Feb 26, 2007
290
62
Leimen
Booting this phone to recovery is a bit tricky:
1. Shut down phone and wait for a couple of seconds
2. Connect an USB cable to PC and phone
3. Push and hold louder button
4. Push power button until recovery mode will be shown

I prefer ADB:
ADB DEVICES
ADB REBOOT RECOVERY
 

3mel

Senior Member
Aug 23, 2012
1,393
409
London
I press volume up plus power simultaneously while inserting the connected USB cable.
 
Last edited:

gabi11

Senior Member
Dec 13, 2011
595
311
Thanks guys!
Managed to do it after connecting to my laptop.

Just wiped the cache partition - hope it'll help..
 

gabi11

Senior Member
Dec 13, 2011
595
311
Well unfortunately it didn't help.
The screen still flickers.

I'll factory reset the phone.
Hope it'll help and it's not a hardware issue...
 

3mel

Senior Member
Aug 23, 2012
1,393
409
London
consider also reflashing the current firmware. there's even a way to do that that doesn't involve wiping your apps. using the HOME_CSC file will keep your user data intact. then if that yields no results you can try a factory reset.
 

gabi11

Senior Member
Dec 13, 2011
595
311
consider also reflashing the current firmware. there's even a way to do that that doesn't involve wiping your apps. using the HOME_CSC file will keep your user data intact. then if that yields no results you can try a factory reset.
Thanks man but I don't know exactly how to do it...
I'll factory reset it and that's it.
Hope it'll solve the issue 🤞
 
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gabi11

Senior Member
Dec 13, 2011
595
311
I wiped the device yesterday.
Looks like the issue is solved.... No more flickering!
Not a hardware issue 👏😁

Thanks everyone!
 
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abdellahboughrom

Senior Member
Mar 18, 2016
146
11
Hope it is not a hardware issue. Because my old s5 and pretty all samsung s5 have screen flickering problem especially in cold weather.
 

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    consider also reflashing the current firmware. there's even a way to do that that doesn't involve wiping your apps. using the HOME_CSC file will keep your user data intact. then if that yields no results you can try a factory reset.
    Thanks man but I don't know exactly how to do it...
    I'll factory reset it and that's it.
    Hope it'll solve the issue 🤞
    1
    I wiped the device yesterday.
    Looks like the issue is solved.... No more flickering!
    Not a hardware issue 👏😁

    Thanks everyone!