We knew this day was coming. Samsung’s been working on Tizen for years now, taking its time to help flesh-out the platform into something that would be able to take a swing at the Android-dominated phone landscape out there now. We’ve already seen Samsung bring Tizen to its cameras, as well as its smartwatches – and just last week it reached a milestone as it updated the first-gen Galaxy Gear to replace its native Android OS with Tizen. But for all this progress, we’ve been lacking one key development: a full-on smartphone, a commercially-focused Tizen handset. [...]