Microsoft's new mobile strategy? Bring as many of its services as it can to other platforms. That started with Microsoft Office and Cortana, and it's continuing with its Edge browser, which is available in beta on iOS and Android today. For now, the early version of the mobile browser is only available to Windows Insiders, which requires a Windows 10 PC to sign up. iOS users will be able to access it through Testflight, while Android users can snag it through Google Play's app testing service.