Wi-Fi Direct is a wireless technology that allows compatible devices to communicate directly with each other over Wi-Fi. Unlike a standard Wi-Fi connection, it does not require the devices to connect through a wireless router or access point. Instead, the connection is established using the devices’ built-in Wi-Fi modules, which must support Wi-Fi Direct.
For example, in a typical home network, a phone and a TV communicate through the router:
Phone → Wi-Fi network → Wi-Fi router → Wi-Fi network → TV
With Wi-Fi Direct, the devices can communicate directly:
Phone → Wi-Fi network → TV
An Internet connection is not required because Wi-Fi Direct creates a local wireless connection between the devices.
How Wi-Fi Direct Works
Wi-Fi Direct uses the Wi-Fi hardware in compatible devices to establish a peer-to-peer connection.
When a device starts a Wi-Fi Direct connection, it searches for compatible devices nearby. The available devices appear in a list, allowing you to select the device you want to connect to. During the connection process, one device becomes the group owner, while the other device joins the connection.
Once the connection is established, the devices can communicate directly and exchange data. The available functions depend on the devices and their software. For example, a smartphone can send photos directly to a compatible printer or use a supported wireless display function to show its screen on a TV.
Wi-Fi Direct and TVs
TV manufacturers use Wi-Fi Direct technology to establish a direct connection between their TVs and other devices. However, they give these connections their own brand names, which makes sense since they use their own software to establish the connection, while Wi-Fi Direct serves as the medium for transmitting information.
| TV brand | Function or technology | Use of Wi-Fi Direct |
|---|---|---|
| Sony | Wi-Fi Direct | Direct connection of compatible smartphones, computers and other devices to the TV for sharing photos, videos and music |
| LG | SmartShare / Wi-Fi Direct | Direct connection between a compatible phone and TV for sharing content |
| Panasonic | Wi-Fi Direct / Miracast | Direct connections with compatible devices and wireless display functions |
| Samsung | Screen Mirroring and related wireless functions | Wi-Fi-based direct connections are used by some models and functions |
| Vizio | Screen mirroring / wireless display functions | Some Vizio models use direct Wi-Fi communication for connecting compatible devices |
| Philips | Wireless display / Wi-Fi Direct on supported models | Used on compatible models for direct wireless connections |
| TCL | Screen mirroring / Miracast on supported models | Wi-Fi-based peer-to-peer connections can be used for wireless display |
Can devices use regular Wi-Fi while using Wi-Fi Direct?
In many cases, yes. A device can use Wi-Fi Direct even if its Wi-Fi connection is simultaneously being used to connect to a regular wireless network. However, this depends on the device, the operating system, and how Wi-Fi Direct is implemented.
For example, a smartphone can remain connected to a Wi-Fi router for Internet access while simultaneously establishing a Wi-Fi Direct connection with a TV and mirroring its screen on the TV. But this depends on the device’s chip and software.
