I was using an app and ads were showing where ad should not be. I thought maybe I forgot to enable ad block, so I checked and I was getting a yellow network error. After looking further I found that my cellular carrier, T-Mobile, hijacks any dummy DNS clients, like the VPN used by this up. It doesnt work if Im connected via LTE or 4G. I called T-Mobile and discovered that there is no way to fix this, except to switch to a different ad blocker that doesnt use VPN dummies. Are use my phone a lot at home to connected to my Wi-Fi and it works fine its just when Im not home and Im on LTE that I get ads. This of course has made me very sad I gave the app five stars because its a great app and great company, but I am disappointed with my carrier for disabling the ability to not look at ads.