The three ways to connect your phone to a TV
You can connect your phone to a TV using a cable plugged into the TV's HDMI port, by casting wirelessly through an app, or by mirroring your screen without installing anything extra. The cable method works when ready but requires you to stay near the TV. Wireless casting gives you freedom to move around but needs both devices on the same network. Screen mirroring is the middle ground — it works on most phones and TVs without setup, though the picture quality depends on your TV model.
Which method works best depends on what you want to do. If you are watching a video or photo you have stored on your phone, any method works fine. If you are streaming from an app like Netflix or YouTube, casting usually gives better picture quality because the app runs on the TV itself rather than being sent from your phone. If you need to show something quickly to one person in the room, mirroring is fastest.
Key Takeaways
- HDMI cables are the most reliable connection and work with any TV, but you need a cable that fits your phone's charging port and an adapter if your TV does not have a spare HDMI port.
- Casting through apps like Google Home, AirPlay, or Samsung SmartThings requires both your phone and TV to be on the same Wi-Fi network, and the TV must support that casting standard.
- Screen mirroring built into your phone's settings works on most modern TVs without installing an app, though the TV must support Miracast, AirPlay, or a manufacturer's own mirroring standard.
- If your TV is older than five years and does not have built-in smart features, a cable connection is usually your only option without buying an external device.
Connecting with an HDMI cable
An HDMI cable plugged directly into your TV is the most straightforward method and works with any TV that has an HDMI port. You will need a cable that connects your phone's charging port to HDMI. For iPhones, this is a Lightning-to-HDMI cable or adapter. For Android phones, this is a USB-C-to-HDMI cable or adapter. These cables cost between $15 and $40 and are available at any electronics store.
Plug the HDMI end into any available HDMI port on the back or side of your TV. Plug the other end into your phone's charging port. Turn on the TV and switch to the correct HDMI input using your remote — the TV will show you which input number the cable is plugged into. Your phone's screen will appear on the TV within a few seconds. The picture quality is excellent because the data travels directly through the cable with no wireless interference.
The main drawback is that you are tethered to the TV by the cable length. If you want to show something to a friend across the room, you have to hold your phone near the TV or use a very long cable. Also, your phone will not charge while connected this way unless you buy a cable with a separate power input, which is less common.
Casting through your phone's built-in casting feature
Most modern phones have a built-in casting button in the quick settings menu. On Android, swipe down from the top of your screen twice to open the full quick settings panel and look for "Cast" or "Screen Cast". On iPhone, swipe down from the top right corner to open Control Center and look for "Screen Mirroring" or "AirPlay". Tap the button and your phone will search for nearby devices to connect to.
Your TV must support the same casting standard as your phone. Android phones use Miracast or Google Cast. iPhones use AirPlay. Some TVs have these built in; others require a separate device like a Google Chromecast, Amazon Fire Stick, or Apple TV plugged into an HDMI port. Check your TV's manual or search the model number online to see which casting standards it supports. If your TV does not support any of them, you will need to buy one of these external devices, which cost between $30 and $100.
Once you tap the casting button, select your TV from the list. Your phone will connect and your screen will appear on the TV. The connection is wireless, so you can move around the room freely. Casting uses your Wi-Fi network, so both your phone and TV must be connected to the same network. If they are on different networks or your Wi-Fi is weak, the connection will drop or fail to start.
Using screen mirroring without an app
Screen mirroring is similar to casting but uses a different technology. Instead of your phone sending video to a specific app on the TV, it sends a copy of everything on your phone's screen to the TV directly. This works on most TVs made in the last five years without needing to install anything. On Android, open Settings, go to Display, and look for "Cast" or "Wireless Display". On iPhone, open Control Center and tap "Screen Mirroring".
Your TV must support Miracast (for Android) or AirPlay (for iPhone). Many newer TVs have this built in, but older models do not. If your TV does not have it, you can buy a Miracast or AirPlay adapter that plugs into an HDMI port. The setup is the same as casting: select your TV from the list, and your phone's screen appears on the TV within a few seconds.
Screen mirroring drains your phone's battery faster than casting because your phone is doing more of the work. The picture quality is usually good, but it depends on your Wi-Fi signal strength. If you are streaming video, casting is often better because the video app runs on the TV itself rather than being sent from your phone, which uses less bandwidth and gives a more stable picture.
What to do if your TV is older or does not have smart features
If your TV was made before 2018 or does not have a smart TV interface, it likely does not have casting or mirroring built in. Your best option is an HDMI cable, which works with any TV that has an HDMI port. If your TV only has older ports like composite (red, white, and yellow cables) or VGA, you will need an adapter that converts HDMI to that format. These adapters cost $10 to $30 but are less common in stores — you may need to order online.
If you want wireless connectivity on an older TV, buy a Chromecast, Fire Stick, or similar device and plug it into an HDMI port. These devices add casting and mirroring to any TV. They cost between $30 and $100 depending on the model and features. Once plugged in, they work the same way as a TV with built-in casting — your phone connects wirelessly and your screen appears on the TV.
Troubleshooting common connection problems
If your phone and TV are not finding each other, the most common cause is that they are on different Wi-Fi networks. Check that both devices are connected to the same network name. If you have a 2.4 GHz and 5 GHz network with the same name, try connecting both devices to the 2.4 GHz version, which has better range. Restart both your phone and TV by turning them off for 10 seconds and turning them back on.
If you are using an HDMI cable and the TV shows no picture, try a different HDMI port on the TV. Some ports may not be active or may be reserved for other devices. If the cable is very long or old, it may be damaged — try a different cable if you have one. Make sure your phone's screen is not locked, as some phones will not display to an external screen when the lock screen is active.
If the picture is choppy or keeps cutting out, move your phone and TV closer together and away from other wireless devices like microwaves or cordless phones, which can interfere with Wi-Fi. If you are casting video and it keeps buffering, your Wi-Fi signal may be too weak. Move closer to your router or switch to a wired connection on the TV if it supports Ethernet.
Comparing the three methods side by side
| Method | Setup time | Picture quality | Works on old TVs | Cost |
|---|---|---|---|---|
| HDMI cable | Seconds | Excellent | Yes | $15–$40 |
| Casting with app | 30 seconds | Good | No (needs external device) | Free or $30–$100 for device |
| Screen mirroring | 30 seconds | Good | No (needs external device) | Free or $20–$50 for adapter |
Frequently Asked Questions
Can I connect my phone to a TV that does not have Wi-Fi?
Yes, using an HDMI cable. This is the only wireless-free method and works with any TV that has an HDMI port, regardless of whether it has smart features or internet connectivity. If your TV only has older ports, you will need an HDMI adapter.
Does casting use a lot of data from my phone plan?
Casting uses Wi-Fi, not your phone's cellular data, so it does not count against your data plan. However, if you are streaming video through an app while casting, that video data comes from the internet through your Wi-Fi router, not from your phone's storage.
Why does my screen mirroring keep disconnecting?
The most common cause is a weak Wi-Fi signal. Move your phone and TV closer to your router, or try connecting both devices to the 2.4 GHz band if your router has separate 2.4 GHz and 5 GHz networks. Also check that no other device is using a lot of bandwidth, like a computer downloading large files.
Can I use my phone while it is connected to the TV?
With an HDMI cable, your phone screen and the TV screen show the same thing, so anything you do on your phone appears on the TV. With casting, the app runs on the TV, so you can use your phone for other things while the video plays. With screen mirroring, your phone is mirrored, so the TV shows everything you do.
What if my phone does not have the same charging port as my friend's phone?
You will need different HDMI cables for each phone. iPhones use Lightning, newer Android phones use USB-C, and some older Android phones use Micro-USB. Buy the cable that matches your phone's charging port. If you use multiple phones, keep a cable for each one, or buy a universal adapter that works with multiple port types.