While we're estimating that the all-in-one VR headset is going to be a big deal, it's not going to replace your phone - it's going to replace your television. For those that take this next wave serious enough to replace their television AND their phone, well - therein lies the danger. Warnings are out there. We've talked about this. The troubles we've been discussing over the past several years regarding virtual reality headsets become a much bigger deal when it comes to using said device as your one-and-only.