I'm thinking of getting a series 3 with cellular. I'm wondering if the LTE is disabled, if there is really any warnings or something that are disruptive. I previously got a cellular enabled iPad and that would always throw an annoying "no plan detected" message when I didn't have it hooked up to a cell plan. As far as I could tell it was impossible to disable on the iPad and I just wanted to make sure the same thing wasn't happening on the LTE series 3. Thanks!