Okay, so I have the sidekick lx 2009 and I got it like 5 months ago and I never wanted to take the time to register it, but I want picture mail, so I decided to register it. And I don't have a data plan. I have AT&T and just unlimited calls and texting. So, it says Network data services are currently unavailable. Either your APN setting is incorrect or your account is not configured for data services. Then is says a welcome screen will appear within 24 hours after purchase. If it does not, power the device off, then on. To bypass this screen, press the top left button and select "phone and text" You will be prompted to register later. And I let it register for 24 hours and it still didn't work. I also turned it off then back on. I don't know what to do. And what is and APN?