AirMobile Installer Pro is a powerful Android app that works on Android >11 phones.
Besides the Installer features that include Transmit Rate & RSSI that you use for Wi-Fi verification and AP documentation, you have powerful information you can use to troubleshoot.
These features include the number of clients active on AP, Channel utilization, Basic Rates, supported rates, and TCP uplink (if you have the AirMobile server APP). Read more about troubleshooting with AirMobile Installer Pro here.