Re:Why oh why? (Score 4, Interesting)

There are several reasons. They're not necessarily nice, but these are indeed the facts. 1) Financial reporting. They want you to have an additional line because some of their performance metrics are based on the number of active subscriber lines, rather than the actual number of subscribers. While this isn't as big of a deal with individuals, consider enterprise customers (Microsoft, IBM, etc) who may have 10,000 or more lines. Cumulatively, those make a huge difference in reporting quarterly net subscriber gains, and sometimes even 10k or so is enough to beat the next carrier. 2) Because they can. Seriously, what are you going to do about? Not use wireless? Good luck with that. Although they often allow you to add unlimited data via DUN to your voice plan, they know that they can squeeze out an extra $10/mo per customer if they make it easier for you to just get an additional line. While this sounds unfair and anti-consumer, consider that Verizon Wireless has made this type of behaviour their standard method of operation for years, and they've been wildly successful at it. Consumers enjoy getting screwed and will pay out the nose for it, time and time and time again. 3) Carriers feel that if you have one device for data and another for voice, you'll be more inclined to use the data device more often. It's a psychological thing. I haven't seen the studies first-hand, but having worked for three of the four major national carriers, I can assure you that this is the way they think. #1 is pretty much the main reason. And on #2, Sprint actually has a very reasonable (compared to Cingular and Verizon) offer: $40 to add unlimited DUN to your voice plan, covering both 1xRTT (slower, 144k) and EVDO. Sprint also has no problem with you attaching your device as a DUN modem, as long as you pay for it. I use my a900 via Bluetooth with my MacBook Pro all the time. One caveat to doing this is that you tend to miss incoming voice calls. I know the carriers all say this doesn't happen, but trust me -- it does. All the time.