Just noticed something missing in Portico. I was about to change my speed to 2G (it isn't visible in settings even though I'm on T-Mo, that's what you get for buying your phone locked from Phones4U, it's using EE firmware), and was about to do the Field Test (##3282#) and... nothing happened. So, with 3G/4G being the only options on my phone (and I can't even use 4G because I'm not on EE), and Field Test not working, how can I lock my phone to 2G signal using the firmware I am (I point blank refuse to load different firmware, unless it's firmware from an update pushed to my phone).
Nvm,
Bing Google brought up the answer. Use ##3282 then hit call (instead of ##3282#)
http://forums.windowscentral.com/nokia-lumia-920/211663-field-test-mode-portico.html