Google runs an array of tests on its Pixel phones and smartwatches throughout the development cycle. Here’s a peek behind the curtain of what that testing looks like.Photograph: Julian ChokkattuAll products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Learn more.Smartphones are durable, powerful devices we carry everywhere. They get slightly better every year, too. Whether t...