S3 Mini - Full screen ads

[IJzenrub]

Hi everyone

My girlfriend has an Samsung S3 Mini with the following advertisement problem.
She gets full screen ads (sometimes just a black screen), and the question if she wants to speed up etc.
She has tried some advertising detector apps but couldn't find which app is causing the advertisements.
This is the screenshot she send me:


You guys have some tips to get rid of them?

Thanks!

 

[B. Diddy]

Welcome to Android Central! Install and run something like AirPush Detector or Lookout Ad Network Detector. If they detect an ad network, they will let you know how to opt out of it.

 

[IJzenrub]

Already tried AirPush Detector, but we we will try Lookout Ad Network Detector. Thanks

 

[nickyboyparks]

I found a solution. When the ads pop up. Hit your home button for few seconds to view resent apps if using 4.2 android or whatever technique to see recent apps.
You should see the ads along with recently used apps and the ads are generated by " network service" . go into settings-apps-all apps-scroll to network service and disable or deactivate. It will work. I had the same problem.
I believe it's malware but haven't investigated further why it happen. I will email Google on the issue..