I upgraded my Nokia 1520 to 8.1 software a couple of weeks ago. I had apps already installed that I had paid money to remove the ads. After installing 8.1 all the ads are now back on my apps!! Why? I paid to have them removed when I had 8.0 & the ads went away. They immediately returned after downloading 8.1 to my 1520. I called AT&T who told me they have nothing to do with that. I explained the charge to remove the ads appeared on my AT&T bill. They told me to contact Nokia. Has anyone here ever tried to contact Nokia? I have for a couple of weeks now & it's pretty impossible. I posted this question at Nokia facebook. They ignored it, etc. There is no number to call. This is my third Nokia cell phone so I love their product but they have no customer service. I even tried their forum discussion. Oh, yeah, I tried uninstalling the apps & reinstalling them & the ads are still there. Can someone please help me! Nokia won't help, nor do they appear to care. Thank you all.