The solution is as follows:
If your mobile phone can not search the router's 5G wifi signal, it is mostly because your mobile phone does not support the wifi signal in the 5G band. It may also be caused by the unreasonable 5G wifi Settings. At present, not all mobile phones and laptops support 5G wifi signals, especially some mobile phones produced a few years ago, many of which do not support 5G wifi signals. You can contact your mobile phone manufacturer for consultation. Check whether your phone supports 5G wifi signal. You can also log in to the official website of the mobile phone manufacturer to check the relevant information for confirmation