How To Cast From Samsung Galaxy S25 To Your TV (2026)

You can cast from a Galaxy S25 to a TV in four main ways: Smart View, Google Cast, Samsung DeX, or a USB-C to HDMI cable.

Which one you should use depends on the TV, because Smart View needs a Samsung TV while Google Cast needs a Cast-enabled TV or a Chromecast.

Each method below takes a couple of minutes, and the fixes section covers the usual reasons the TV does not show up.

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Which casting method should you use?

Method	Needs	Wireless	Best for
Smart View	Samsung TV, same Wi-Fi	Yes	Mirroring the whole phone screen
Google Cast	Chromecast, Google TV or Cast-enabled TV, same Wi-Fi	Yes	Sending video from a single app
Wireless DeX	Samsung TV (2018 or newer) or Miracast display	Yes	A desktop-style screen on the TV
USB-C to HDMI	Adapter and HDMI cable, any HDMI TV	No	Lag-free mirroring with no Wi-Fi

How do you mirror with Smart View?

Smart View is built into the phone, so there is no app to install.

Turn on the TV and connect the phone and TV to the same Wi-Fi network.
Swipe down from the top right of the phone to open Quick settings.
Tap Smart View.
Pick your TV from the list and tap Start now.
Enter the PIN or tap Allow on the TV if it asks.

To stop, tap the Smart View icon on the phone and then tap Disconnect.

Can you use SmartThings instead?

Yes, the SmartThings app is an alternative route to the same mirroring.

Open SmartThings and select your TV.
Tap the three-dot menu.
Tap Mirror screen (Smart View).
Tap Start now.

Menus can vary by software version, so use this if the Quick settings tile fails to find the TV.

What changed in Smart View with One UI 7?

Phone-to-TV mirroring still works on One UI 7, but the older option to show the TV’s screen on the phone was removed from the Quick settings Smart View.

SamMobile reported in May 2025 that the TV-to-phone option can still be reached through SmartThings by selecting the TV, opening the Featured tab and tapping Smart View.

How do you cast with Google Cast?

Google Cast sends one app’s video to the TV, so the phone stays free for other things.

Put the phone on the same Wi-Fi network as the Chromecast, Google TV Streamer or Cast-enabled TV.
Open a Cast-enabled app such as YouTube.
Tap the cast button (its position varies by app).
Select your device and wait for the button to turn solid.

If your home has more than one Wi-Fi network, Android can jump between them and hide the cast button, so forget the other network in Wi-Fi settings.

Check price on Amazon: Chromecast

Can you use Samsung DeX wirelessly on a TV?

Yes, if the TV is a Samsung from 2018 or newer, a Samsung Smart Monitor or another Miracast display.

Swipe down with two fingers to open Quick settings and tap DeX.
Select the TV or monitor and tap Start now.
Choose Allow on the TV if it asks.

Keep the phone close to the TV for a stable link.

How do you connect with a USB-C to HDMI cable?

A wired connection avoids Wi-Fi problems and works on TVs without any smart features.

Plug a USB-C to HDMI adapter into the phone.
Connect an HDMI cable from the adapter to the TV.
Switch the TV to that HDMI input.
Tap Start if the phone prompts you.

Samsung says DeX also works over a standard USB-C to HDMI adapter, and unplugging the cable restarts DeX, so save your work first.

Check price on Amazon: USB-C to HDMI adapter

Wired or wireless DeX: what is the difference?

Detail	Wired DeX	Wireless DeX
Cable needed	USB-C to HDMI adapter or DeX cable	None
Display	Any TV or monitor with an HDMI port	Samsung TV from 2018 or newer, Samsung Smart Monitor or Miracast display
How to start	Tap Start on the popup, or the DeX icon in Quick settings	DeX icon in Quick settings, then pick the display
Watch out for	Unplugging restarts DeX	Keep the phone close; may not work well with the screen off

Smart View availability can vary by model, software version and carrier, according to Samsung.

What if the TV does not show up or casting fails?

Problem	Fix
TV not listed	Put both devices on the same Wi-Fi network, then restart the phone and the TV
Phone will not display on TV	Tap Allow on the TV, and update the software on both devices
TV keeps asking for permission	On the TV, go to All Settings > Connections > External Device Manager > Device Connect Manager > Access Notification and set it to Off
Screen turns off while mirroring	Search Screen timeout in phone Settings and lengthen it
Image looks small	In Smart View, open the three-dot menu > Settings > Phone aspect ratio (16:9 suits most TVs)
Connection error	Turn off any VPN on the phone

Should you update the TV software?

Yes, an out-of-date TV is a common reason mirroring fails.

On a Samsung TV, go to Settings > Support > Software Update > Update Now, although the path can differ by TV model.

Leave the TV on until it finishes and restarts.

What is the last resort?

Samsung lists a factory data reset of the phone as the final step, under Settings > General management > Reset > Factory data reset.

Back up your data first, because the reset cannot be undone.

For more help, see Samsung’s screen mirroring guide and its Google Cast help page.

One Comment

Nave says:

October 15, 2026 at 10:59 pm

Great toolkit — covering DeX separately from plain HDMI mirroring is a distinction most articles blur. One practical note on Method 4: the S25’s USB-C port supports DisplayPort Alt Mode, but only with adapters that explicitly list video output support, which your ‘must support video output’ aside covers well. On the Wi-Fi Direct method, worth mentioning that performance is noticeably worse than router-based Smart View because the phone is juggling the direct link and its normal connection. I run a small screen-mirroring guides site, net-mirror.pro, and your final-tips line about wired HDMI being most reliable is exactly what I tell readers who are tired of troubleshooting wireless dropouts. The DLNA/BubbleUPnP section is a nice inclusion too — for local media it beats mirroring on both battery life and picture quality.