I want to see someone build a proxy that uses the free iMessage or WhatsApp allowed connection to send arbitrary data.
Like have a WhatsApp relay set up at home that you are sending messages to and from, from the plane.
Like at a most basic level, send a message of a URL to your home WhatsApp which loads the web page there, and sends the HTML back as a WhatApp message reply so you can render it etc.
Wonder what someone could all do and make work.
edit Guess someone made a TCP relay using WhatApp already, neat.
Way back in the day a lot of authenticated wifi firewalls did enable DNS requests to pass through, or at least to resolve using their DNS server, without being authenticated.
Someone smart created a TCP-over-DNS tunneling tool that I had a lot of great experience with, at least for more simple news websites of the day.
A more current alternative: https://github.com/yarrick/iodine