The 6 GHz band is available to certain newer Wi-Fi equipment where local rules permit its use. A compatible router and client are both required, and the usable channels or modes can vary by jurisdiction. The additional band offers another radio environment; it does not remove the importance of placement, obstacles and overall internet delivery.

A practical example
A household with compatible equipment can use a supported 6 GHz connection for a nearby device while older televisions remain on other bands. The router can serve different clients without every television gaining access to the same additional radio options.
A common misunderstanding
A router advertising newer Wi-Fi features does not upgrade an older client's radio. Check the viewing device's actual capabilities and local availability rather than expecting every saved network to offer 6 GHz.
Related terms
Stable technical definition. Editorial approach