Summary of "What is the use of 2.5GHz WiFi band if we already have 5GHz? #tech #science #telugufacts #telugu"

The provided subtitles contain only a fragmented and unclear phrase ("wi- 5G g b") and do not provide any meaningful content related to the video topic. Therefore, no technological concepts, product features, reviews, guides, or tutorials can be summarized from the given text.