Originally Posted by ~kyle
It's probably because of your APN settings. If you're using a proxy in your APN settings try deleting it.
This does actually work - I'm on Telstra in Australia and using the Telstra.iph with no proxy apn + adaway blocks the ads whereas the Telstra.wap or telstra.internet with proxy apn + adaway does not. Adaway works FANTASTICALLY as always on my WiFi with TPG.
Galaxy Note 8.0 Xposed Build JDQ39.N5120XXCMG7 / Baseband N5120XXBMD9 / Kernel CivZ-SpherEngine-Rev on Telstra LTE