I use Orange Wednesdays, and I’m not an Orange customer, I’m a O2 customer. What you need is either an unlocked phone and an Orange PAYG SIM, log onto Orange Wednesdays and register, and it sends a text code, then you put the SIM of your preferred network in, give OW the number of the PAYG SIM, and the code when asked for it, and away you go. That’s what I did with my iPhone 4. I can’t do it with my 5 yet, because I’ve lost the old Orange SIM, and I need to get a new one, and repeat the process with the old Sony Z600 I kept for that purpose. Dunno why I took the SIM out, though… 😳