AirPlay support on Roku depends on the actual device model and software, alongside the Apple sender and application. The Roku logo alone is not a compatibility guarantee.
Read the current supported-model table rather than assuming every stick or Roku TV has the same receiving features.

Record both ends of the setup
On Roku, read Settings → System → About for the model and software. On the Apple sender, record its model and operating-system version. Keep the app and version in the same note if the question concerns a particular video player.
Roku’s current AirPlay guidance lists supported models and software conditions. Use that live table for the exact device rather than copying one minimum version into a universal promise. A similar retail name can cover more than one model number.
Inspect the receiver’s actual control
Where supported, Roku exposes Apple AirPlay and HomeKit settings. Check whether AirPlay is enabled and follow the current connection guidance for the sender and receiver. Do not confuse HomeKit setup with the act of streaming a video.
Use the intended receiver name and legitimate on-screen code. If several devices appear, select carefully before opening private content. Screen mirroring can display notifications and other interface activity beyond the programme.
A native iPhone app can have separate AirPlay limitations. A receiver being compatible does not force every video application or content source to allow output.
Test and describe the exact route
Use a non-sensitive supported sample and distinguish app-based AirPlay video from system Screen Mirroring. Record whether the receiver is absent, pairing fails or video fails after a connection. Those outcomes point to different questions.
A successful receiver connection is not a native Roku app installation or an IPTV USA compatibility certificate.
Useful answers
Does every Roku support AirPlay because it has Wi-Fi?
No. Check the actual model and software against Roku’s current requirements.
Does AirPlay support mean every iPhone player can use it?
No. The sender app and content have their own support conditions.