My verdict is simple: use your TV’s built-in AirPlay for full-screen mirroring when it’s available, and use each streaming app’s Cast button when you only want to watch a video. If the TV doesn’t support AirPlay, especially with Chromecast or Fire TV hardware, a bridging app is the practical fallback, and I arrived at that by separating regular streaming from actual screen mirroring.
Check the TV Before Installing Anything
The brand and model year matter more than the iPhone does. AirPlay is already built into quite a few sets, including Samsung models from 2018+, LG webOS TVs from 2019+, Sony Android and Google TV sets, Vizio TVs, most newer Roku models, and Hisense models from around 2020 onward.
I’d start in the TV’s Settings menu and look for either “AirPlay” or “Apple AirPlay and HomeKit.” If one of those appears, there’s no reason to install another app just to mirror the phone. You’ve already got the free option sitting there.
Mirror the Whole iPhone Screen
For AirPlay mirroring, the iPhone and TV need to be connected to the same Wi-Fi network. Open Control Center on the iPhone, tap Screen Mirroring, and choose the TV from the device list.
The TV may display a code the first time you connect. Enter that code on the phone, and the full screen should appear on the TV.
Chromecast, Google TV, and most Fire TV devices are the main exceptions. They’re based on Google’s technology rather than Apple’s, so repeatedly hunting through the iPhone settings won’t make AirPlay work on unsupported hardware.
Use Casting for Netflix and YouTube
If the goal is just Netflix, YouTube, or another streaming service, don’t mirror the entire phone. Mirroring is unnecessary for that job and can drain the battery faster.
Open the streaming app, start the video, tap the Cast icon, which looks like a rectangle with Wi-Fi-style waves, and select the TV. There’s no extra app needed when the streaming service already includes casting.
This also avoids the black screen people often see when trying to mirror Netflix or Prime Video. That isn’t usually a broken connection. Those services intentionally block mirrored playback with DRM protection, so their built-in Cast function is the right method.
When AirPlay Isn’t Supported
For a Chromecast, Fire TV, Roku, or DLNA device without usable AirPlay support, you’ll need an app to connect iOS with the TV. One option is the DoCast mirroring app.
It’s fairly barebones and doesn’t add ad clutter to the basic process. Open it, tap Choose Smart TV, select the device on the same Wi-Fi network, go to the Screen tab, and tap Start Broadcast. It’s my fallback when a TV isn’t compatible with AirPlay 2, rather than wasting time forcing an unsupported connection through DoCast.
Test the Network Last
If the TV never appears, check the router for “AP isolation.” That setting can prevent two devices from seeing each other even though both show the same network name.
To test everything yourself, first try the streaming app’s Cast button, then check the TV settings for AirPlay, and finally attempt a short screen broadcast with both devices on the same Wi-Fi. That order makes it much easier to tell whether the limitation is the app, the TV, or the router.