For a long time, the only Apple approved utility suitable of analyzing WiFi was the Apple Airport Utility app:
Click on "Version History" on the above page. The last update was Oct
2019, so the app isn't quite ready for burial. However, it's interesting that there were several firmware updates that coincided with IOS updates, suggesting compatibility problems between the iPhone and the various Airports. I was marginally involved in one of those, where early iPhones and would fail to connect or stay connected to non-Airport wireless routers. Apple was contacted and refused to fix what they perceived was everyone else's problem. So, there was a flurry of router firmware updates to fix the timing problems Apple had introduced. I don't have all the dates and details handy and really don't want to spend the time getting involved in yet another endless debate.Meanwhile, Apple seems to have relented a little on allowing WiFi Analyzer type programs. For example:
I burned about 30 minutes looking through other network tools on the App Store (because I don't do much work on Apple products and am very out of date as to what apps are available). I couldn't find anything that offered access to Layer 2 (MAC layer) data as would be needed to do network hardware analysis. There are plenty of Layer 3 (IP layer) tools such as ping, traceroute, and other basics, but these are trivial compared to what is available for Android, Windoze, MacOS and of course, Linux.
For example, Network Signal Info Pro will display most everything I need to untangle cellular provisioning errors and display what the WiFi chip is doing:
LTE Discovery will show far more than I want to know about the available LTE sites and services including 5G sites:
Cellular-Z will display quite a bit about the connected cell sites and WiFi routers:
Apple has a long way to go before I consider an iPhone or iPad as a serious tool for network troubleshooting.
Drivel: I spent half of Saturday and half of today moving and stacking 1/2 cord of firewood to my house. Monday and Tuesday will be more of the same. If there are any questions, it may be a few days before I recover. Right now, my right side aches. Tomorrow, I'm certain the other 1/2 will also ache.