I had a rough first 24 hours with the Apple Watch. It was seemingly one frustration after another. Then I realized I was trying to use the thing as I would my iPhone. And that’s simply not what this device is. It’s not an iPhone replacement, it’s 100 percent a complement. Which is why some of the initial backlash that you wouldn’t be able to use the device without your iPhone was not only misguided — it was completely backwards.