Android uses hotspot 5G

There are two methods, the second one does not require recompiling, which is more convenient

1. Violent modification-system layer

If you want to support 5G hotspots, you need to change the channel to 149 (you can check the available channels through the iwlist c command), you also need to modify hw_mode=a,
modify the source code: system/netd/server/SoftapController.cpp

asprintf(&wbuf, "interface=%s\ndriver=nl80211\nctrl_interface="
         "/data/misc/wifi/hostapd\nssid=%s\nchannel=%d\nieee80211n=1\n"
         "hw_mode=%c\nignore_broadcast_ssid=%d\nwowlan_triggers=any\n",
         argv[2], argv[3], channel, (channel <= 14) ? 'g' : 'a', hidden);

change into:

asprintf(&wbuf, "interface=%s\ndriver=nl80211\nctrl_interface="
     "/data/misc/wifi/hostapd\nssid=%s\nchannel=%d\nieee80211n=1\n"
     "hw_mode=%c\nignore_broadcast_ssid=%d\nwowlan_triggers=any\n",
     argv[2], argv[3], 149, 'a', hidden);

Directly write channel as 149 and hw_mode as a

2. Application layer modification

3. Channel rating

Recommended software: WiFi analysis assistant/instrument