Free ad free (some are gsf free) cellular signal strength & Wi-Fi debuggers
*Wi-Fi*
WiFi Analyzer (Open Source) by VREM (free,adfree,gsffree)
https://play.google.com/store/apps/details?id=com.vrem.wifianalyzer
WiFiman by Ubiquiti [+speed tests & discovery] (free,adfree,reqgsf)
https://play.google.com/store/apps/details?id=com.ubnt.usurvey
WiFi Analyzer and Surveyor by ManageEngine (free,adfree)
https://play.google.com/store/apps/details?id=com.manageengine.wifimonitor
NetSpot WiFi Heat Map Analyzer by Etwok (free,adfree,reqgsf)
https://play.google.com/store/apps/details?id=com.etwok.netspotapp
Wi-Fi Monitor by Andrey Efremov [does discovery] (4.4,free,adfree,gsffree)
https://play.google.com/store/apps/details?id=ru.andr7e.wifimonitor
*Cellular*
Network Signal Guru by QTRUN (free,adfree)
https://play.google.com/store/apps/details?id=com.qtrun.QuickTest
NetMonster by Michal Mrocek (free,adfree)
https://play.google.com/store/apps/details?id=cz.mroczis.netmonster
RF Mobile Trace by RFAssurance (free,adfree)
https://play.google.com/store/apps/details?id=com.tts.imnos_mobile
If you know of others which are free and ad free, and especially if they're
gsf free, please add to the list so that everyone benefits from every post.
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