A70 screen will not dim/USB connection.

[AndrewTanner]

Hey,

I've noticed a problem with my A70 regarding trying to dim the screen when locking manually or expecting it to lock after screen timeout.

Basically, my phone won't sleep, at least not whilst charging. I spent a good while playing around with settings on my phone, such as timeout and lock screen settings. I also powered off the device but no luck.

After trying to figure out the problem further I discovered that the notification tray is being constantly updated every few seconds swapping between "Android system USB connector connected" and "Android system USB connector disconnected". So presumably this is what is keeping the phone awake as it thinks it is being constantly connected and disconnected from source USB source. I cleaned out the USB port but it was pretty clean to begin with. I'm not getting any notifications regarding any moisture detection.

The A70 charges just fine (though sometimes there is a slight delay to it recognising being plugged in) and it seems that the USB tethering interface is working well as I can use the remote debugging feature in Google Chrome (for web development purposes) just fine. As far as I can tell, there are no actual issues with the USB port - it functions as I would expect.

The A70 was last updated on the 14th August to "Security Patch level: 1 July 2019" and looking over the log of updates I see that "The charger/USB port's moisture detection algorithm has been improved" - so someone somewhere has been looking at this feature and I doubt it coincidence that my device has just developed a fault, given that I've not had it anywhere near moisture or excessive dirt.. and the port still actually works!

I've also tried Safe Mode but the issue persists. Also, if I power the device off, then plug it into the wall, power it on, the notification issue stops... until I unplug it/switch off the wall socket - then it comes back again.

Anyone else having similar problems?

[LeonardoA70]

Good morning, I have the same problem to 3 days, already did the hard reset. Already tried with the blower to see if it had any dirt, already made some commands from the phone itself, tried to disable notifications, reset the volume and power button. But none of this worked, the problem persists. I contacted samsung support and will be sending the device for assistance to see what is possible.

There are even several complaints from users outside Brazil with the same problem, some say they sent the device in the service where they changed the usb connector of the device, but the problem persisted. Suspecting to be a problem in the software after the last update.

Some returned to the assistance where the motherboard was changed, where only then managed to solve the problem.

The fact that it is a loss to be without the device a month, given the price we pay to buy it.

[Hardyb31]

Follow the battery drain  posts! It work 100%

[malake]

Hi i tried evrything even the draining battery but didnt work but i have another aolution it has been working for few days now connect your phone to a pc you ll get a settings that this phone is hosted by the connected device try to put usb setting to just charging and switch then switch the option to this device is hosted by this phone and the notification will dissapear immediately  qnd everything is back to normal 

[Horluwaseun]

I don't understand

[Ranj]

Have the same issue Definitely a major problem as the battery lasted me 5hrs.. and phone is really hot.. they better fix it asap

[Njordi123]

Soo. My a70 just recieved an system update. 

The issue has not shown itself since the phone booted up again. Cautiously optimistic right now. 

If it returns, im turning the phone over to the store. In both cases, ill stop following this thread. Good luck to all of you. 

Fingers crossed 

[willgibson28]

Which country are you in? Just wondering if UK customers can expect the update soon... 

[Njordi123]

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@willgibson28 wrote:

Which country are you in? Just wondering if UK customers can expect the update soon... 

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Scandinavia. 

It did not help. 

[willgibson28]

Dammit. 

I actually bought mine in Scandinavia, Norway. I live in Norway but I'm from the UK.

Mine started messing up the day I came to the UK for Christmas and I'm here until April! Such hassle as I doubt I can take it to a service centre here, will probably have to post it back to Elkjøp/Samsung in Norway 🙄

[Saef_Alhindawi]

I have a temporary solution, its work for me at least. 

Open phone dialer and type *#0808# ,

menu will appear with several bullet-point style options 

Select third one and reboot the phone .

Its work from week ago , hope its useful