Hi @peru18ec092,
Refer this thread Change frequency from 5hz to 2.4hz
Go to your phone setting - Hotspot setting -> Setup hotspot -> Choose band 2.4 GHz
In Bolt IoT App, You can click on the “OK” button to dismiss the popup as it is just a warning. It is reminding you that the Bolt cannot connect to 5GHz WiFi networks and you should connect to 2.4GHz WiFi networks.