I believe that in cases where the third party site lies outside the carrier infrastructure and the header is plain text (some carriers encrypt the value), a carrier<->site operator VPN is required.
People shouldn't really be surprised that ALL mobile web traffic is heavily proxied (and transformed, by default). You probably wouldn't want to experience a direct net connection as flaky as mobile ones actually are.
People shouldn't really be surprised that ALL mobile web traffic is heavily proxied (and transformed, by default). You probably wouldn't want to experience a direct net connection as flaky as mobile ones actually are.