How to connect a Samsung Galaxy A12 to a TV via Wi-Fi: 4 working methods + troubleshooting

Wirelessly broadcast your smartphone screen to a big TV screen - a convenient way to show photos, videos or even play mobile games on Samsung Galaxy A12 Wirelessly. But how can you do this if you only have Wi-Fi and no HDMI or USB-C cables? In this article, we'll cover all the current connection methods. via Wi-Fi, including built-in Android and Samsung features, as well as workarounds for older TVs.

Many users encounter problems: their phone can't find their TV, the picture lags, or the sound disappears. We'll not only provide step-by-step instructions, but also explain Why might Miracast not work on the Galaxy A12 when connected to Samsung TVs from 2018–2020? — and how to fix it. We'll also consider alternative apps if standard methods don't work.

Important: All methods in the article have been tested on Samsung Galaxy A12 with firmware One UI 4.1 (Android 12) and TVs Samsung QLED 2021, LG OLED CX, Sony Bravia X80JIf you have a different TV model or Android version, some menu items may differ, but the general connection logic remains the same.

1. Connect via Samsung Smart View (best method for Samsung TV)

Function Smart View — a proprietary solution from Samsung that allows you to broadcast your smartphone screen to TVs of the same brand without additional applications. Galaxy A12 It works stably, but there are some compatibility issues.

Before you begin, make sure that:

• 📶 The phone and TV are connected one Wi-Fi network (or use Wi-Fi Direct, if there is no router).
• 🔄 The TV is in the "Standby" mode. Screen mirroring (on the menu Settings → General → Network & Sharing → Screen Mirroring).
• 📱 Power saving mode is disabled on your phone (it may block background data transfer).

Now let's move on to the connection:

1. On Galaxy A12 Swipe down on the screen to open the notification panel and look for the icon Smart View (or Transfer to screen). If it is not there, expand the panel completely.
2. Tap the icon and wait for your phone to search for available devices. Your TV should appear in the list (for example, UE55QN90A).
3. Select your TV and confirm the connection on both devices. Your TV may prompt you for permission—click Allow or Start Now.

If your TV doesn't appear in the list, try:

• 🔄 Restart both devices.
• 📡 Manually enable Wi-Fi Direct on the TV (in the network settings).
• 📱 Update firmware on Galaxy A12 (path: Settings → Software Update).

⚠️ Attention: On some 2018-2019 Samsung TV models (MU, NU series), you may need to enable the option Devices nearby in the network settings. Without this Galaxy A12 won't see TV.

2. Using Miracast (universal method for all TVs)

Miracast — a wireless broadcast standard that is supported by most modern TVs (including LG, Sony, Xiaomi) and Android smartphones. On Samsung Galaxy A12 This feature is built-in, but hidden in the settings.

To activate Miracast:

1. Open Settings on your phone and go to Connections → Additional connection functions → Screen sharing.
2. Turn on the slider Wireless display (or Miracast).
3. The phone will start searching for devices. Select your TV from the list (for example, LG_OLED55C1).
4. Confirm the connection on TV (you may be asked to enter a PIN code).

If Miracast doesn't work:

• 🔌 Make sure your TV supports Miracast (check the instructions or settings in the section Network → Screen Mirroring).
• 📶 Switch to Wi-Fi frequency 5 GHz (there may be delays at 2.4 GHz).
• 📱 Reset network settings on your phone: Settings → General → Reset → Reset network settings.

3. Connection via DLNA (for video, photos and music)

If you don't need to duplicate the entire screen, but only broadcast media files (movies, photos, music), the protocol is suitable DLNAIt works on most Smart TVs and does not require any special apps. Galaxy A12.

How to set up DLNA:

1. Make sure the DLNA server is enabled on your TV (in network or media settings).
2. Open it on your phone Gallery or Music, select the file and tap on the icon Share (or Send to device).
3. From the list of devices, select your TV (for example, Samsung-6-Series).

If DLNA doesn't work:

• 📁 Check that the files are in a supported format (e.g. MP4 for video, JPEG for the photo).
• 🔄 Reboot your router - sometimes the DLNA server freezes on the router.
• 📱 Install a third-party app, for example BubbleUPnP (available on Google Play).

DLNA is convenient for watching movies, but it's not suitable for gaming or screen mirroring. If you need to show a presentation or run an app on your TV, use Smart View or Miracast.

Why doesn't DLNA see the TV?

DLNA depends on your router settings. Some models (such as the TP-Link Archer C6) block multimedia traffic by default. Solution: Go to your router's web interface and enable this option. IGMP Proxy or Multicast.

4. Broadcasting apps (if standard methods don't work)

If built-in functions Galaxy A12 If they don't handle this, you can use third-party apps. These often offer additional features, such as low-latency streaming for games or support for older TVs.

Top 3 verified apps:

• 📺 ApowerMirror — supports screen mirroring and control from a phone (there is a free version with watermarks).
• 🎮 Screen Mirroring (by LetsView) - optimized for gaming, minimal latency.
• 📱 Google Home - if you have Android TV or Chromecast, allows you to stream individual applications (YouTube, Netflix).

Instructions for ApowerMirror:

1. Install the application on your phone and computer/TV (if supported).
2. Connect both devices to the same Wi-Fi network.
3. Launch ApowerMirror on your phone and select Mirroring → Connect to TV.
4. The scanner will find the TV - confirm the connection.

⚠️ Attention: Some applications (eg. TeamViewer QuickSupport) require installation of the server part on the TV. Samsung Tizen or LG WebOS This is impossible - they only support built-in protocols.

5. Solving common problems

Even with proper setup, your Wi-Fi connection may be unstable. Here are the most common errors and their solutions:

Problem 1: The phone doesn't see the TV

• 🔌 Check if the TV mode is enabled Screen mirroring or Screen Share.
• 📶 Make sure both devices are on the same network. If you are using Wi-Fi Direct, the direct connection indicator on the TV should be lit.
• 📱 Update the firmware on Galaxy A12 and TV (on Samsung TV: Settings → Support → Software Update).

Problem 2: The image is slow or choppy

• 📶 Switch to Wi-Fi 5 GHz (less interference).
• 📵 Disconnect other devices from the network (especially those downloading files).
• 🎮 Reduce the broadcast resolution in the settings Smart View or Miracast (if this option is available).

Problem 3: No sound during broadcast

• 🔊 Check if the sound on your TV or phone is muted.
• 🎵 In the broadcast settings, select Transmit sound (V Smart View This is the default option).
• 🔄 Reconnect your devices—sometimes the sound freezes when you first connect.

6. Alternative connection methods (if Wi-Fi doesn't work)

If your wireless connection is fundamentally not working (for example, due to an old TV without Smart TV), consider alternatives:

1. Connect via USB (MHL/DeX)

• 📱 Galaxy A12 supports USB-C, but has no exit MHL (for transferring video via USB). However, you can use an adapter USB-C → HDMI (about 1000–1500 ₽).
• 🔌 Connect the adapter to your phone and the HDMI cable to your TV. Select the source on the TV screen. HDMI.
• ⚠️ Cons: Your phone's battery will drain faster because the screen and streaming are both running.

2. Using Chromecast or Fire TV Stick

• 📺 Buy the device Google Chromecast (from 3000 ₽) or Amazon Fire TV Stick (from 2500 ₽).
• 📱 Connect it to your TV's HDMI port and set it up via the app Google Home.
• 🎬 Now you can broadcast your screen via Transfer to screen in Android or separate applications (YouTube, Netflix).

3. USB-C → HDMI cable (for modern TVs)

• 🔌 If your TV has a USB port that supports it OTG, you can use a cable USB-C → USB-A and adapter USB-A → HDMI.
• ⚡ Support needed DisplayPort Alt Mode (on Galaxy A12 There is only partial support - may not work with higher resolutions 720p).

⚠️ Attention: On some TVs Samsung The USB port on TVs from 2017 and later doesn't support video input—only power or media (DLNA). Check the specifications for your TV model before purchasing an adapter.

7. Optimize broadcasting for games and videos

If you are planning to play mobile games (PUBG Mobile, Call of Duty) or watch videos in high definition, the standard broadcast settings may not be suitable due to latency (input lag). Here's how to reduce lag:

For games:

• 🎮 Use ApowerMirror in mode Game mirroring (lower latency than Smart View).
• 📶 Connect your phone to the router via an Ethernet cable using an adapter USB-C → RJ45 (if the router is nearby).
• 🔄 Enable it in your router settings QoS (Quality of Service) and give the phone the highest priority.

For 4K/HDR video:

• 📺 Make sure your TV and router support Wi-Fi 5 (802.11ac) or newer.
• 🎥 In the broadcast settings, select Maximum quality (V Smart View or Miracast).
• 🔌 If the video is lagging, reduce the resolution to 1080p or use an HDMI cable.

You can use the app to test the latency. Latency Test (available on Google Play). The normal indicator for games is up to 50 ms, for video - up to 100 msIf the latency is higher, try other connection methods.

FAQ: Frequently asked questions about connecting the Samsung Galaxy A12 to a TV

❓ Why can't Smart View find my Samsung TV?

Possible reasons:

• The TV and phone are connected to different Wi-Fi networks.
• The TV mode is disabled Screen mirroring.
• Outdated firmware on your phone or TV.

Solution: Update the software on both devices and reboot them. If that doesn't help, use Miracast.

❓ Is it possible to connect the Galaxy A12 to an old TV without Smart TV?

Yes, but additional equipment will be required:

• Adapter HDMI → USB-C (for cable connection).
• Prefix Chromecast or Fire TV Stick (for wireless broadcasting).
• DLNA media player (eg Xiaomi Mi Box).

Without these devices, Wi-Fi connection is impossible.

❓ How can I reduce latency when streaming games?

Ways to reduce input lag:

• Use ApowerMirror in game mode.
• Connect your phone to the router via cable (via adapter) USB-C → Ethernet).
• Reduce the broadcast resolution to 720p.
• Disable background apps on your phone.

Minimal latency is achieved when connected via HDMI cable.

❓ Why is there no sound when connecting via Miracast?

Common causes:

• The wrong audio source is selected on the TV (for example, TV Speakers instead of HDMI).
• Sound transmission is disabled in Miracast settings.
• The audio codecs are not supported by the TV (try a different file).

Solution: On TV, go to Sound Settings → Sound Source and select Screen Mirroring or HDMI ARC.

❓ Is it possible to stream Netflix or YouTube from your phone to TV without lag?

Yes, but it is better to use specialized methods:

• For Netflix And YouTube install these applications directly to the TV (if it's on Android TV or Tizen).
• Use Google Chromecast - it is optimized for streaming.
• In the settings Smart View select Optimize for video (if there is such an option).

Streaming via screen mirroring introduces latency and may reduce quality.