The Verizon "supercookie" is an HTTP header they add to your traffic. They do it via deep packet inspection, not anything on the device, and it affects iOS as

The Verizon "supercookie" is an HTTP header they add to your traffic. They do it via deep packet inspection, not anything on the device, and it affects iOS as well. After they got caught doing this they added the option to opt out at the account level. https://www.verizonwireless.com/support/unique-identifier-header-faqs/ https://www.verizonwireless.com/support/unique-identifier-he...