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Usually, you can’t mirror a smart TV’s built-in apps directly to another TV. The mirroring features described by TV makers generally send a phone or computer screen to a TV, not one TV’s picture to another. To show the same program on two TVs, use a separate HDMI source—such as a streaming box, receiver, or computer—and distribute that source to both displays.
First, identify what is playing the program
The right connection depends on the source. A TV’s built-in apps run inside that TV; a device connected to its HDMI input follows a separate signal path. Connecting something to a TV’s HDMI input does not make the TV’s built-in video available as an HDMI output.
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- Built-in TV app: The TV generates the picture itself. The manufacturer guidance reviewed does not establish a general feature for sending that picture directly to a second TV.
- Separate HDMI device: A streaming box, receiver, console, or computer can send its HDMI output through distribution equipment to two TVs.
- Phone or computer screen: Compatible casting and mirroring features typically send content from that device to a TV. This is not the same as mirroring TV-to-TV.
Choose the signal path that fits
| What you want to do | How to connect it | Key conditions |
|---|---|---|
| Mirror a phone to a TV | Use a method supported by both devices, such as Smart View, AirPlay, Miracast, or Google Cast. | Check the exact models and whether you want full-screen mirroring or app casting. Requirements vary by feature. |
| Cast content from a phone app | Use the app’s Cast or sharing function with a compatible TV or receiver. | For Google Cast, the sender and receiver must be on the same Wi-Fi network. See Google’s app-casting instructions. |
| Show one external HDMI source on two TVs | Connect the source’s HDMI output to suitable distribution equipment, then connect its outputs to each TV’s HDMI input. | Check resolution, refresh rate, audio, copy-protection support, and the equipment’s input/output direction. |
| Send an external HDMI source wirelessly | Connect the source to a compatible HDMI transmitter and the second TV to its receiver. | Check the kit’s supported formats, compatibility, and practical range. These vary by product. |
| Show a TV’s built-in app on another TV | No general direct TV-to-TV method is established by the manufacturer guidance reviewed. | If the same service is available on a separate streaming device, you can route that device’s HDMI output instead. App rights or simultaneous-stream limits may apply. |
How to show an HDMI source on two TVs
Use a splitter or another suitable HDMI distribution device for a wired setup. The signal should travel from the source’s HDMI output, through the distribution equipment, and into each TV’s HDMI input. A TV-to-TV HDMI cable alone is not the solution: the guidance reviewed does not describe a TV’s HDMI input as an output for its built-in apps.
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- Identify the separate device playing the content and locate its HDMI output.
- Choose distribution equipment that accepts that source and supports the resolution, refresh rate, audio format, and copy protection your setup needs.
- Connect the source output to the distribution device’s input, then connect its outputs to the TVs’ HDMI inputs.
- Select the correct HDMI input on each TV. If the picture or sound fails, check the equipment’s specifications and each connection’s direction.
For a wireless HDMI path, use a transmitter and receiver designed to work together: connect the source to the transmitter and the receiver’s HDMI output to the second TV. Epson’s WirelessHD setup instructions illustrate this source-to-display arrangement. They do not establish a universal wireless range or show that a TV’s built-in apps can be sent through its HDMI input.
#1 Best Overall
![MT-VIKI 4K HDMI Splitter 1 in 2 Out, [with Power Adapter], Metal Case](https://m.media-amazon.com/images/I/41LewVAgyIL._SL160_.jpg)
MT-VIKI 4K HDMI Splitter 1 in 2 Out, [with Power Adapter], Metal Case
- 【Split One HDMI Signal to Two Displays】MT-SP102, This HDMI splitter distributes one HDMI input signal to two displays simultaneously, showing the same image on both screens with synchronized video transmission. Ideal for home theater, conference rooms, retail displays, and training environments. [Note!!!: 1. Supports mirror mode only, not extended mode. 2. NOT built-in audio port]
- 【Supports 4K Ultra HD Resolution】Supports resolutions up to 4K@30Hz, with backward compatibility for 1080P and lower resolutions, delivering sharp images and stable performance for movies, presentations, and everyday display sharing.
- 【Compatible with HDMI Devices and Gaming Consoles】Works with most HDMI source devices including computers, streaming devices, media players, cameras, and gaming consoles. Compatible with TVs, monitors, and projectors equipped with standard HDMI input ports.
- 【Includes 5V/2A Power Adapter】Comes with a 5V/2A external power adapter to provide consistent power for stable signal transmission. The dedicated adapter helps reduce flickering, signal loss, or display interruptions during extended use. （Noted！！！ If no signal detected after connection, please replace with HDMI cable supporting 4K 30Hz or higher.）
- 【Easy Plug and Play Setup】No driver or software required. Simply connect the input device, output displays, and included power adapter for quick setup.
What phone-to-TV mirroring support does—and doesn’t—mean
Google Cast
Google’s setup guidance calls for a compatible display, power, secure Wi-Fi, and a compatible phone or tablet. Availability and performance can depend on the device, network, and area. App casting is from a supported app or device to a Cast-compatible display; it does not turn the receiving TV into a video source for another TV.
Samsung Smart View and SmartThings
Samsung describes Smart View and SmartThings for mirroring a Samsung mobile device to a Samsung TV. Its support guide also discusses HDMI adapters as a wired phone-to-TV option. It does not document this as a TV-to-TV function. Samsung identifies network mismatch, mirroring not being enabled at both ends, and a missing TV permission as possible reasons a device may not connect.
Rank #2
CLOSS HDMI Splitter 1 in 2 Out, 4K HDMI Splitter for Dual Monitors Supports 3D Full HD 1080P Aluminum Dual Monitor Compatible for PS4 Fire Stick HDTV(1 Source to 2 Displays)
- 【HDMI Splitter 1 In 2 Out】1X2 HDMI splitter can distribute one HDMI input signal (cable box, Roku, Xbox, etc.) to 2 HDMI displays (TV, Monitor, Projector, etc.), duplicating / mirror video and audio simultaneously with no loss, no lag. Allows you to enjoy the same video to 2 different rooms.NOTE: Please make sure the resolution of both output devices is the same to ensure normal operation.Not support extend, mirror only.
- 【Long Distance Transmission】The HDMI splitter provides 10.2 Gbps bandwidth for wide-ranging use.Normally, the supported hdmi cable could be up to 40ft. Allow you duplicate the screen to different rooms.Aluminum alloy case, fast heat dissipation, not easy to heat and durable, and will not damage the connected equipment.
- 【Plug and Play】 HDMI Splitters has 1 HDMI input port, 2 HDMI output port, one USB power port. It's plug and play, just plug the attached USB power cable to supply power, connect the HDMI signal source device like blueray player, connect the 2 HDMI display devices like monitor, HDTV, projector by HDMI cable.
- 【Wide Compability】This HDMI to HDMI adapter is fully compliant with HDMI standards V1.4, V1.3, V1.2, V1.1, V1.0. Compatible Input: cable box, Roku, Fire Stick, PS3, PS4, PS5, Blu-Ray, DVD-Player, etc. Compatible Output: HDTV, Projector, Monitors, etc.
- 【Package Content & Free Guarantee】Package include 1x 4K UHD HDMI Splitter, 1x Micro-USB cable, 1x User Manual. We have a one-year manufacturer's guarantee and offer you free technical support.
LG screen sharing
LG documents smartphone-to-TV screen sharing and AirPlay for supported iPhones. Its wireless mirroring guidance and Miracast and MHL information make clear that support depends on the model and device.
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Sony model differences
Sony’s compatibility guide says functions vary by TV model. It also says Google TV models released after 2020 do not support the Screen mirroring function, while other methods may be available depending on the model. That limitation should not be generalized to every Sony TV or every wireless protocol.
Quick Recap
Best Value
8K HDMI Splitter 1 in 2 Out 4k 120Hz HDMI 2.1 Splitter for Dual Monitors Support EDID Management HDCP 2.3 HDR 10 for Laptops PCs TV Boxes DVD Players PS5/PS4/PS3
- 【HDMI Splitter 1 in 2 out】The HDMI Splitter is used to copy one HDMI input signal to two monitors to display the same content on both monitors,doesn't support extended mode. It is not a switcher and doesn't support bidirectional transmission (2 in 1 out is not supported). It supports EDID copy,auto EDID and HDCP 2.3. Note: This device must be connected to the power source.Not recommended for use with docking stations, adapters, KVM switches, etc
- 【8K 60Hz Ultra High Definition Resolution】HDMI splitter dual monitor supports 8K 60Hz HD resolution, and the powerful HDR10 High Dynamic Range Image's technology gives the picture a more vivid and realistic visual effect. Backward compatible with 4K@144Hz, 4K@60Hz, 1080P and above. It supports up to 48 Gbps smooth and distortion-free high-bandwidth data transmission to ensure high-quality image and audio transmission. Note: For an 8K 60Hz HD experience, an HDMI 2.1 cable with a length of less than 3 meters, an 8K HDMI source device, and an 8K HDMI display are recommended.Note: ARC/EARC/VRR function is not supported
- 【EDID Management】In Auto EDID mode, HDMI 2.1 Splitter will automatically detect and copy the display settings of the lowest resolution of the two monitors to be compatible with the display of both monitors. In Copy EDID mode, the resolution of the OUT 2 output is automatically copied or reduced to the display setting of the “OUT 1 monitor”, whichever is the OUT 1 monitor. In this mode, it is recommended to connect the monitor with lower resolution to OUT1.Please use high-quality cables to avoid situations where the display cannot function properly due to cable quality issues
- 【Wide Compatibility】HDMI splitter 4k 120hz is compatible with most of the devices with standard HDMI interface.HDMI input supports connecting to laptops, PCs, game consoles, TV boxes, DVD players, PS5/PS4/PS3, etc.HDMI output supports connecting to HDTVs, monitors, projectors etc.Note: Not an audio extractor. Doesn't support connecting to any audio devices, such as speakers, bar speakers
- 【Package Includes & After-sales Service】The package contains a 1x2 HDMI splitter HDR device, a power cable, a user manual. If you encounter any problems after receiving the package please feel free to contact us. We will be here to provide you with 24 hours after-sales service. And provide you with one year warranty service
Rank #4
OREI SplitExtend HDMI Splitter Extended Display for Dual Monitor - 4K@30Hz
- Dual Monitor Split & Extend Support – Connect a single HDMI source to two external displays for mirrored or extended viewing. Ideal for boosting productivity with a 3-screen setup (laptop display + 2 monitors).
- Broad OS Compatibility + i5 Processor Requirement – Works with Windows 11/10/8.1/7, macOS 10.10+, Chrome OS, and Android 7.1+ (Android supports up to 1080p mirroring).Not compatible with iOS, Linux, or Unix.Note: For optimal performance, an Intel i5 processor or higher is required.
- Driver Installation Required – This adapter is not plug-and-play. It needs the Silicon Motion driver for proper functionality.Important: If using a work laptop, check with your IT admin to confirm permission for driver installation.
- 2-in-1 USB-A & USB-C Connection – Features an integrated USB-A to USB-C adapter, making it compatible with USB-C, USB-A, Thunderbolt 3/4, and USB4 laptops and devices. Offers flexible and hassle-free setup.
- Complete Package & Support – Comes with a USB-C to Dual HDMI Adapter and User Manual, backed by 1-Year Manufacturer Support for a reliable, worry-free experience.
Rank #3
HDMI Splitter 1 in 2 Out, 4K HDMI Splitter for Dual Monitors Duplicate
- 1] 2-Port HDMI Splitter - 1 HDMI ports in and 2 HDMI out for various HDMI devices, such as Xbox One S, Xbox 360, PS3, PS4,PS5,Beamer, DVB Receivers, Blu-ray Player, Apple TV, Laptop, HDTV/HD Monitor.
- 2] Output HDMI high quality digital video signal to 2 HDMI female output, can 2 output device should be active at any time.
- 3] Built in 13.5cm HDMI cable, another cable is unnecessary. Support IR control, CEC pass through.
- 4] HD Audio and HDCP Compliant- Audio Formats: LPCM, DOLBY AC3,DTS7.1,Direct Stream Digital. No distortion of audio or video, no delay in signal transference Output Resolution: 480i~1080P@50/60, 1080P@24/50/60,2160P@24/30/60,VGA~UXGA
- 5] DEMAO 2 port HDMI Splitter allows switch one source HDMI devices to 2 HD display and supports resolutions up to 4Kx2K.
Check compatibility before buying equipment
- Write down both TV model numbers and identify whether playback comes from a built-in app or a separate device.
- For built-in apps, look for documentation that explicitly names the intended sender and receiver roles; phone-to-TV support alone does not establish TV-to-TV output.
- For casting, confirm the sending device, app, and receiving TV or receiver support the same method. For Google Cast, put the sender and receiver on the same Wi-Fi network.
- For HDMI distribution, verify input/output direction and the supported resolution, refresh rate, audio, and copy-protection formats for the equipment and both TVs.
- For wireless HDMI, check the particular kit’s compatibility and operating limits rather than assuming a specific range or format.
Troubleshoot a device that does not appear
- Confirm that the exact TV and sending device support the same mirroring or casting method.
- Check that the receiving feature is enabled, the devices meet the method’s network requirements, and any TV permission prompt has been accepted.
- For Google Cast, make sure the phone or tablet and Cast device are on the same Wi-Fi network, and confirm the app supports Cast.
- For HDMI distribution, trace the signal from the source’s HDMI output through the equipment to each TV’s HDMI input. Recheck the selected inputs and equipment specifications.
- Consult the support page for the exact TV model. Feature availability and requirements can differ across models and software.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
