(If your iPhone has a home button, swipe up from the bottom of the screen instead.) Then, hit the AirPlay button at the top of your playback controls and select your Roku from the device list. Open Control Center on your iPhone or iPad by swiping down from the top-right corner.You can activate AirPlay in either of two ways: With AirPlay support, there’s finally a workaround for Roku’s missing HBO Max support: Just connect an iPhone or iPad to your Roku via AirPlay, then use the HBO Max mobile app to start playing a video. Here’s a rundown of some things you can now accomplish on certain Roku players that were difficult or impossible to pull off before: Watch HBO Max on Roku I’d argue that the arrival of AirPlay is Roku’s most substantial software update in years. While it might seem like a small feature, AirPlay adds a lot of capabilities that Roku previously lacked, including HBO Max support, easy music playback from your phone, and even big-screen video chat.