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A70 screen will not dim/USB connection.

(Topic created on: 28-09-2019 05:28 AM)
5528 Views
AndrewTanner
Journeyman
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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?

556 REPLIES 556
longhaul
First Poster
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Mine started doing the same fault yesterday (26.9.2019).

 

I purchased mine through a 3rd party on Amazon on June 2019, so have contacted them and asking what options do I have. 

 

After reading all the messages here, it seems to be a fault with the USB connecter to motherboard. 

 

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Havron30
First Poster
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That's what's going on with my phone A70
longhaul
First Poster
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I left mine in to the Samsung shop and they told me come back on Saturday. 

 

Once i find out what the issue is, i shall post here. 

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Engrbilal
Apprentice
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Same problem with my samsung A70 .need solution please

Engrbilal
Apprentice
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Same issue .need solution

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longhaul
First Poster
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They told me that the whole mother board needs replaced and they had to order in the parts.

Hopefully i get my phone back tomorrow evening (UK time).

 

 

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Amoss
Explorer
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Mine replaced only the USB and when they brought it back, the whole thing was one big defect (no calls, no internet, warms up and battery drain). They took it back, replaced the whole motherboard and now it's ok.

 

The battery is weaker than before and I'm wondering whether I want to go to round 3...

 

Bottom line: it looks like Samsung needs to say something about this issue... for now it's one big silence from them.

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Engrbilal
Apprentice
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We payed such a big amount for the name samsung. We haven't payed 70 thousand to let our cell phone open .we haven't payed for a repaired set. I refused to dismantle my set .samsung must indulge in this matter. I bought it box packed a month ago and this issue happened. Samsung must replace the complete set or atleast enable us to disable this dam notification usb connected disconnected. I hope to have a good responce from samsung very soon .

Regards 

Engineer Bilal Ahmed

 

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Monoo
Apprentice
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Turn off your mobile for 2 to 3 days and charge it 100% and than turn on your mobile

For me it works.

No more notifications and display work normaly
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Monoo
Apprentice
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I face the same problem I just keep my phone turn off for 3 days and when I turn it on my problem fixed no more USB notification and display work normaly
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