You establish a TCP session with the IPv6 address of that site instead of its IPv4 one by way of getting its AAAA record and your phone having dual-stack networ

You establish a TCP session with the IPv6 address of that site instead of its IPv4 one by way of getting its AAAA record and your phone having dual-stack networking enabled. (Most US carriers have IPv6 enabled and issue IPv6 addresses to their phones.)