Apple's new iPhones are impressive and all, but I'd argue the company's new Watch Series 4 stole the show in Cupertino last week. In addition to the first major redesign in the wearable's history, Apple crammed a host of improved health and fitness features into the Series 4's new and improved body. There's a lot to dig into and honestly, we're just not done testing the thing yet. As we work on our full review, though, there a few features and flourishes you should definitely keep in mind. You probably don't need me to tell you that Apple made its Watches bigger this year: we're looking at 40mm and 44mm bodies, up from the classic 38mm and 42mm.

Your wrist is about to get a serious upgrade. Google announced on Wednesday that a long-overdue Wear OS redesign will be rolling out to all watches over the next month. It's not the first Wear OS refresh we've gotten--Google has quietly been updating the OS formerly known as Android Wear throughout 2018, including bringing a true dark mode that finally takes advantage of the OLED screens on nearly every smartwatch--but this is the first full-scale redesign it's gotten since Android Wear 2.0 landed back in February 2017. And while it's not quite the revolutionary overhaul some want to see, it does bring a nice visual improvement and a few necessary navigational shortcuts to help us spend less time touching the screen. Of note, watches will now use Google's Products Sans font, bringing them in line with the Pixel phones.

Apple introduces the biggest new features of its mobile and desktop operating systems each year at its annual developer conference, which kicks off on Monday. WWDC, the Worldwide Developer Conference, offers a sneak peek at the new capabilities app developers will be able to work into their apps--and iOS and Mac users will get to use--during its opening keynote. After that, developers get deeper dives, demos, and how-to's during the conference's breakout sessions and panels. Sometimes Apple uses the event as a platform to launch new hardware products as well. Last year, the big news included the HomePod's debut, a new 10.5-inch iPad Pro, redesigns to its App Store and Music app, and ARKit, the developer framework that lets developers more easily build augmented reality apps for iOS.

Now that smartwatches are actually useful enough for the general populace, setting them up isn't as pedestrian a task as pairing with your phone and calling it a day. On the surface, customizing your new device may not seem like a complicated task, but people often overlook some of the tools that can potentially make wearables more helpful. From recommended settings to the apps worth downloading, here's a walkthrough of what you should look out for when setting up your new wearable. This part you probably already know. Turn on your watch, pair it with your phone and follow the onscreen instructions.

If your phone runs Android, and you're interested in buying a smartwatch, your journey begins with answering a single fundamental question: Samsung Gear or Android Wear? Sure, there are other smartwatch platforms that work with Android phones, but Gear (perhaps best represented by the Gear S3) and Android Wear (represented by watches too numerous to mention) have the most mature ecosystems and refined hardware. Google's Android Wear platform has strong third-party app support, and if you opt for a Wear watch, you can choose from a wide variety of models in all shapes, sizes and styles. Samsung, meanwhile, has gone its own way with its Gear smartwatch line-up. These watches run Samsung software, and adhere strictly to the Samsung ecosystem, but also offer some benefits that Wear watches do not.

The Apple Watch can help users stay active, track their health data and can boost workouts with the watchOS 4 update. Apple launched the Apple Watch Series 3 and the watchOS 4 update in September 2015. The Series 3 is priced at $329 for the standard Wi-Fi version and $399 for the LTE cellular model. The wearable device includes a dual-core processor, a faster Siri, a heart rate sensor and is about the same size as the Series 2. While Apple doesn't sell the Series 2 anymore, the company still sells the original Apple Watch for $249. The original Apple Watch also supports watchOS 4. The Workout app is also another feature that can boost users' exercise sessions.

With each generation, the Apple Watch's purpose has seemed to shift. The first one demonstrated what Apple thought a wearable should be, and the second tried to be the perfect workout companion. When it came time to build the Series 3, though, Apple took everything it got right with the fitness-friendly Series 2, polished it up, and threw an LTE radio inside. And lo, the $399 Apple Watch Series 3 became the first of a new breed of Apple devices -- it straddles the line between smartwatch and phone, with a dash of iPod thrown in for good measure. For those who'd rather play it safe, Apple also built a $329 Series 3 with just GPS and no cellular connection.

Don't count Apple out even if it's late to the game in unveiling services based on artificial intelligence, one analyst says. CCS Insight analyst Geoff Blaber says time will tell how well Apple's smarter Siri digital assistant will compete with Google's Assistant and Amazon's Alexa. But he says Apple has an advantage given that it makes software and gadgets designed to work well together. On Monday, Apple previewed a Siri watch face on Apple Watch to offer reminders and other tasks people might be looking for. On the phone, Apple wants its digital assistant to be more helpful in navigating your digital life.

In one of its most jam-packed events ever, Apple made a slew of announcements during its Worldwide Developers Conference on Monday. Some involved incremental changes to hardware and software, while others provided a glimpse at where Apple believes the future of computing is headed. As per usual, Apple dedicated a significant portion of its WWDC keynote to the new software features coming to the iPhone and iPad. In iOS 11, iPhone owners will be getting a new Venmo-style option for sending money to friends via Apple Pay, a redesigned control center, a refreshed Apple Music app with more social features, a new Siri with a natural-sounding voice, and an improved Do Not Disturb feature designed to prevent distracted driving, among other additions. Apple also announced camera improvements, including more photo effects like long exposure mode and upgrades for better low-light photography.

Apple says its Safari browser will try to guard your privacy by identifying and blocking data files that track you as you move from website to website. It's turning to machine learning, a form of artificial intelligence, to make that happen. That's a new focus for Apple as it competes with Google and Amazon. Later Monday, it's expected to announce an internet-connected smart speaker to compete with Amazon's Echo and Google's Home. Other features coming to the Mac include the ability to stop video from automatically playing on websites when using Safari.