Microsoft today said Android and iOS users will soon be able to use Cortana, its virtual assistant, on their smartphones. The Android and iOS Cortana app will work in coordination with Cortana on Windows 10 PCs, according to Microsoft. A Phone Companion app for Windows 10 PCs will help Android and iOS device owners install Cortana on their handset so they can access Microsoft's virtual assistant wherever they go. The Android and iOS version of Cortana will include most features available to the Windows 10 and Windows Phone versions, such as setting reminders, alerts, and alarms; tracking flights and managing travel details; and accessing Cortana's Notebook function for search preferences. Changes made in one version of Cortana will be reflected across all devices. Microsoft said the Phone Companion app will function with Windows Phone handsets, too, to help sync Cortana functions across devices. In order to test Cortana on Android and iOS smartphones, users will need to enroll in Microsoft's Windows Insider program and install the Windows 10 Technical Preview for PCs. Microsoft said the Cortana Companion App will be available for Android phones at the end of June and for iPhones later this year. Microsoft also mentioned that the updated Xbox Music app for Android and iPhone will be available in late June or July with the beta label in tow to stream OneDrive music content. Google's own personal assistant, Google Now, is available for Android and iOS devices, but not Windows Phone. Apple's Siri is only available to iOS.

It sounds like on iOS the digital assistant will have a few more limitations, though even Microsoft stresses that the best experience is still on a Windows device. Things like opening apps with voice commands, or toggling settings or using the "Hey Cortana" command won't be available on iOS or Android, at least not right away.