On June 7, 2021, during Apple's WWDC Keynote, it was announced that FaceTime will be made available for Android and Windows users via the web. A new feature called SharePlay was announced for FaceTime on iOS 15, iPadOS 15, and macOS Monterey at the same event. It will let users on iPhone, iPad, and Mac share music, video, or their screen with people on the call. Apple stated that the feature uses an API that can be enabled on any media service and SharePlay is slated to support Apple Music, the Apple TV app (including Apple TV+), Disney+, Hulu, HBO Max, Paramount+, TikTok, Twitch, and several other media sources at launch. Implementation FaceTime works by establishing a connection between two supported devices. Most Apple devices (such as iPhones, iPads, and Macs) introduced after 2011 support FaceTime. FaceTime is currently incompatible with non-Apple devices or any other video calling services. Mac models introduced in 2011 have high-definition video FaceTime, which devices use automatically when both ends have a FaceTime HD camera. At launch, unlike Mac OS X's iChat, FaceTime did not support group conferencing. The application allowed a one-on-one video chat—only two people could talk at once. If a second user called and the user answered, the video chat with the previous user would end and a new video session began with the second caller. In iPhone, if a phone call was pending and the user attempts to answer, the video call ends and the phone call began with the next user. Support for group video conferencing was added with the release of iOS 12, allowing up to 32 people to participate in a video call simultaneously. Incoming notifications on iOS devices are shown during a FaceTime call, but if they are opened, the video will be temporarily paused until the user is back in the FaceTime app. On the iPhone, a user can activate FaceTime during a phone call by pressing the FaceTime button or initiating FaceTime from their call history or the Contacts application. iOS 7 and newer also provide a separate FaceTime app, as there always has been on Apple's non-telephony devices: iPad, iPod Touch, and Mac. Until the release of iOS 6, FaceTime required a WiFi connection to work. From iOS 6 onwards, FaceTime for the iPhone and iPad has supported FaceTime calls over cellular networks (3G or LTE) provided the carrier enabled it, which by mid-2013