Roku's channel store requires each app to hold a direct content agreement or scope itself to one licensed purpose. A generic player that logs into any Xtream Codes or M3U line doesn't fit that model, so Roku's review process keeps it out, no matter which service supplies the playlist behind it. This is a store policy that applies to the whole category of live-TV player apps, not a comment on any single provider's legitimacy or content. Firestick and Android TV take a more open approach and let player apps install directly from their stores or through sideloading, which is exactly why a workaround only exists on Roku and nowhere else in this comparison.

Screen mirroring casts your phone or tablet's display to the Roku, so the phone runs the player app, such as IPTV Smarters or TiviMate, and decodes the video, while the Roku just shows what the phone sends over the local network. That means the Roku's own processor and Wi-Fi radio aren't doing the streaming work at all, your phone is carrying the full load from login to decoding. If the phone's screen locks or the app pauses in the background, the picture on the TV stops too, since there's nothing left feeding it. It's a real, working fix, but it ties every viewing session to a second device staying awake, unlocked, and connected the entire time you're watching.

Some player developers publish a private Roku channel, a small installable app distributed through a developer code rather than the public store listing. You enter that code in Roku's developer settings menu, and the channel installs like any other app on the home screen, then you log in with your Xtream Codes credentials or paste your M3U playlist URL the same way you would on any other device. It behaves closer to a normal app than screen mirroring does, since the Roku itself decodes the stream this time instead of relaying a phone's screen, but availability depends entirely on whether your specific player has bothered to publish one, and not every developer does.

If you already own a Firestick, Android TV box, or Apple TV, setup is more direct on any of those: install the player app from that platform's own store, log in with your subscription details, and start watching, with no mirroring step and no developer code involved anywhere in the process. Keeping the Roku for its normal streaming apps and adding a small Firestick or Android TV box beside it just for IPTV is a common, low-cost way around the restriction entirely, since those boxes typically cost less than a single month of a cable or satellite bill would.