Integrating a smartphone into the home entertainment ecosystem has become a necessity for many users. However, when it comes to older TV models that lack Smart TV features, the task seems difficult. In fact, there are many effective methods for broadcasting content even to devices released more than ten years ago.
Modern gadgets based on Android have powerful multimedia capabilities, but without proper connection to a large screen, their potential cannot be revealed. In this article, we will analyze in detail wired and wireless solutions that will turn your “simple” screen into a full-fledged entertainment center.
The choice of a specific method depends on the age of your equipment and the availability of free ports. Below we will look at options from the simplest cables to complex network settings, so that you can choose the best path for your situation.
Connection via an HDMI cable and adapters
The most reliable and high-quality way to transfer images is to use a physical connection. Even if your TV is not “smart”, the presence of a port HDMI opens up a wide range of possibilities. To implement this scheme, the smartphone will need support for outputting a video signal through the charging port.
Owners of flagship models from Samsung, Huawei or Sony are the luckiest, since their devices often support the technology MHL or Slimport. It is enough to purchase a special adapter from USB Type-C (or Micro-USB) to HDMI, connect the devices and switch the signal source on the TV remote control.
However, budget smartphone models may not support video transmission via cable. In this case, the direct adapter will not work and the image on the screen will remain black. Before purchasing an adapter, be sure to check the specifications of your gadget on the official website of the manufacturer.
Use an HDMI cable no longer than 2 meters for the first test to eliminate problems with signal quality due to attenuation in long wires.
If your phone supports desktop mode, such as Samsung DeX, then when connected to a TV you will receive interface similar to a computer. This allows you not only to watch videos, but also to work with documents or a browser on a large screen with high definition.
Using external media players and set-top boxes
When a direct cable is not suitable or the HDMI port is busy, external devices come to the rescue. This is the most universal solution for upgrading an old TV. Essentially, you add “brains” to the TV, turning it into a full-fledged Smart TV.
There are various options on the market: from compact Google Chromecast to full-fledged TV boxes based on Android TV. Such devices are connected to a free HDMI connector and receive power either from the network or from the USB port of the TV itself.
- 📺 TV set-top boxes provide full access to the application store Google Play directly on the TV screen.
- 📱 Dongles (Chromecast) are ideal for easily streaming content from a smartphone without the need installation of unnecessary apps on TV.
- 🎮 Game consoles can also act as a media client, supporting the installation of popular streaming services.
Setting up such devices usually takes no more than 10 minutes. Once connected to your Wi-Fi network, you can control video playback from your smartphone or use the set-top box remote control. This eliminates the need to hold the phone in your hands the entire time you watch.
It is important to consider the resolution of your TV. If you have an old model with a matrix 720p or even 480p, buying an expensive 4K set-top box may be redundant. Although modern boxes can scale the picture, you shouldn’t overpay for unnecessary features.
⚠️ Attention: When buying a cheap Chinese TV set-top box, make sure that it is certified by Google. Non-certified devices may not support some popular streaming services in high quality.
Wireless broadcasting via Miracast technology
Technology Miracast allows you to transfer images from a smartphone to a TV without using a router, creating a direct Wi-Fi connection between devices. This solution is often built into modern TVs, but older models will require a special receiver.
If your TV does not support Miracast natively, you can purchase a separate adapter that plugs into the HDMI port. Such devices are often called "Wireless Display Adapter". After connecting the adapter, you need to activate the “Wireless Monitor” or “Screen Mirroring” function in the Android settings.
The pairing process is as follows: you select the device from the list of available connections on your phone, and the smartphone screen is duplicated on the TV. The delay is minimal, which allows you to comfortably view a photo gallery or presentation.
Why can the picture slow down?
Delays when broadcasting via Miracast are often caused by overload of the wireless range. If there are many neighboring Wi-Fi networks nearby, try switching the router to channel 1, 6 or 11 to reduce interference.
It is worth noting that with active screen mirroring, the smartphone battery drains much faster. It is recommended to keep the device connected to the charger during long sessions of watching movies or slide shows.
Multimedia broadcasting using the DLNA protocol
Unlike full screen mirroring, the protocol DLNA is intended exclusively for transferring media files: video, music and photos. This is a more energy-efficient method, since the smartphone only acts as a control panel, and video decoding occurs on the TV or set-top box.
To implement this scheme, both devices must be on the same local network. You need to install a server application on your smartphone, for example BubbleUPnP or a built-in player with DLNA support. On the TV side, you need to launch an application for working with media (often called “Media”, “Photo” or “Video”).
Once the server is detected on the network, you can view your smartphone folders on the TV screen and launch files. The main advantage of this method is the ability to turn off the phone screen or minimize the application, and playback on TV will not be interrupted.
| Characteristics | Miracast | DLNA | HDMI cable |
|---|---|---|---|
| Transmission type | Full screen duplication | Only media files | Full screen duplication |
| Signal delay | Average (depending on Wi-Fi) | Absent | Absent |
| Consumption batteries | High | Low | Medium (can be charged) |
| Picture quality | Compressed | Original | Original |
DLNA is ideal for watching downloaded movies, as it does not load the phone's processor and saves battery power.
Some older TVs may not see modern smartphones on the network due to differences in Wi-Fi encryption standards. In such cases, setting up a guest network on a router or using a software media server on a PC as an intermediary helps.
Setting up a local network and router
The stability of the wireless connection directly depends on the quality of your home network. For comfortable broadcasting of video in high resolution (Full HD and higher), a channel bandwidth of at least 20-30 Mbit/s is required.
It is recommended to use dual-band routers operating in the frequency 5 GHz. This range is less loaded with airborne noise from household appliances and neighboring networks, which ensures smoother data transmission compared to the traditional range 2.4 GHz.
If your TV or set-top box has an Ethernet port, it is preferable to connect them with a cable directly to the router. This will create a stable “backbone” of the network, while the smartphone can connect via Wi-Fi without the risk of losing data packets while browsing.
⚠️ Attention: Make sure that the “AP Isolation” function is disabled in the router settings. If this function is active, devices on the Wi-Fi network will not see each other, and connecting via DLNA or Miracast will become impossible.
In difficult situations, when the Wi-Fi signal is weak in the room with a TV, you can use Powerline adapters. They transmit the Internet signal through ordinary electrical wiring, providing a stable connection where the wireless signal does not reach.
☑️ Checking the network for broadcasting
Solving compatibility and sound problems
A common problem when connecting Android to an old TV is the lack of sound. This may happen because the TV does not support the audio codec that the smartphone uses, or the HDMI cable transmits only a video signal (in the case of cheap adapters).
In the developer settings on Android, you can try changing the audio output configuration. The path to the menu usually looks like this: Settings → About phone → Build number (7 clicks) → For developers → Disable absolute volume level.
If the sound still does not appear, try connecting external speakers or a sound system directly to the smartphone via the headphone jack or Bluetooth while the image is being output to the TV. This will create a home theater effect with high-quality audio.
It is also worth remembering that manufacturers regularly update software. What didn’t work a month ago can work after updating the firmware of your TV or smartphone. Always check for updates in the menu System → Software update.
What to do if the picture is not full screen?
If the image is cropped at the edges, find the “Screen Format” or “Aspect Ratio” setting in the TV menu and select the “Fit to screen” mode, "16:9" or "Just Scan". Avoid “Zoom” mode.
⚠️ Attention: Menu interfaces and names of settings items may differ depending on the version of Android and the manufacturer’s shell (MIUI, OneUI, ColorOS). If you do not find the item you need, use the search inside the phone settings menu.
Frequently asked questions
Is it possible to connect a phone to a TV without HDMI and Wi-Fi?
Without HDMI and Wi-Fi, the options are extreme limited. Theoretically, you can use analog outputs (for example, through a headphone jack with an adapter for RCA tulips), but the image quality will be very low, and there is practically no support for such adapters in modern smartphones.
Why does the phone only charge when the cable is connected?
This means that your smartphone does not support video output technology through the charging port (MHL/Slimport/DP Alt Mode). In this case, only using an external set-top box or wireless adapter will help.
Will control from a smartphone work if the phone screen is turned off?
When using DLNA, yes, playback will continue. When using Miracast or an HDMI cable, the phone screen usually must be active, otherwise the broadcast may be interrupted, although some models allow you to turn off the display when working in the background.
How to improve the picture quality on an old TV?
Try in the phone settings to force the output resolution 1280×720 at frequency 60 Hz. Old matrices often incorrectly process higher resolution signals, which leads to blurriness or artifacts.