No, that's not what that says. It says Unlimited data is available to all customers, in other words those that don't sign up for xFi, for an additional charge.
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And, yeah I signed up for xFi last month and hit almost 2TB of data usage.
What? You quoted my post, which has nothing at all to do with the data limits being different on WiFi and LAN, it was entirely about the cost of renting a modem, and your response 100% about why you should buy your own modem. It had nothing to do with data usage, or WiFi vs LAN data usage. That came up later in the conversation.
AND I actually did explain WiFi vs LAN data. Yeah, I didn't say exactly why they would do it this way
if they did do it this way, how would I even know why they would do that?* I don't work for the company, I don't know why they do the things they do. But I did say, technically, how it would be possible
if they did, but I even specifically said they don't do it this way. Unlimited data is unlimited data with Comcast, it doesn't matter how you connect to use it.
This is why there is an * up above, because I wanted to continue that thought down here in response to this. First, I want to say that, I totally agree with you in principle. How you use the data shouldn't matter. However, the reality is corporations like Comcast do inane shit that makes no sense all the time. So it isn't completely crazy to think that Comcast might only only give unlimited data if you are connected through WiFi. It makes a little sense why a customer would be cautious about the xFi unlimited data and might even think it is WiFi only, and Comcast doesn't do a great job of clarifying it. The normal unlimited package is $50, xFi with Unlimited is only $15. Plus xFi is largely marketed as a WiFi thing. So it isn't crazy to put those two together and think that the cheaper $15 unlimited is WiFi only. Corporations do stupid shit, and if they think they can make an extra buck by screwing over the customer, they'll try it. I mean, there are cellular companies that offer unlimited data, but only if you watch videos at 480p, if you stream HD video you don't get unlimited data. That makes as little sense as Comcast saying you get unlimited data, but only if you use WiFi(again, not what they're doing.)
And, like I already said, it is technically possible for Comcast to track data usage on ethernet and WiFi separately if they wanted. Again, it all comes down to the fact that with xFi you have to use their gateway. It isn't just a modem, it is a modem and wireless router combo. They could, in theory, make a firmware for the xFi gateway that tracks data usage between the Wifi Interface and the WAN interface, and also tracks data usage between the ethernet interface and the WAN interface. They could track these two things separately, and report those two amounts. This isn't that far fetched of an idea, there are already consumer routers that do this. You can do it with DD-WRT and Tomato as well as things like pfSense. But I want to reiterate,
this is not what comcast is doing. This is just how they could do it if they wanted to be truly evil bastards. God I hope no one from Comcast reads this...