As far as I remember WML was processed to a binary payload by an operator gateway and the phone never tried to interpret XML itself Thus, a special operator su

As far as I remember WML was processed to a binary payload by an operator gateway and the phone never tried to interpret XML itself Thus, a special operator support was required with GPRS connection. In 2000 they also had WAP-over-SMS. That was slow. And expensive. One SMS could carry 140 bytes.