2.5ghz 0r 5ghz, to which network should I connect

The two bandwidths 2.5ghz and 5ghz that are used in expanding the wifi signals are used for different purposes. We could get much more wifi speed on the 5ghz bandwidth than we would get on the 2.5ghz bandwidth. So, if we want to stream HD or 4K videos, or we want to play high-end online games connecting to signal with 5ghz bandwidth would be more appropriate. If we only want to do browsing or we want to read news feed, we could connect to the wifi network in 2.5ghz bandwidth.

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