Are you loosing SIM / WiFi network signal. Refresh it here to catch best signal.
WiFi Signal Strength Meter can detect WiFi signal strength and find best areas.
WiFi scanner, network device discovery, speedtest – free (no ads) by Ubiquiti
Internet Speed Test & WiFi Analyzer. Test and meter your net and WiFi speed.
Internet Speed test, WiFi Speed Test is speed meter to check internet speed !