How can I see who is on my wifi

Your iPhone will not directly detect who is on your Wi-Fi Network. That is done by your Wi-Fi Router. There are apps out there, that are provided by the manufacturer of the Router, which will connect to the Router and provide the information that you are looking for. You can even use a computer to log into your Wi-Fi Router and see which devices are connected to it.

There is no set method that all of the above can be accomplished. The method is different from one Router manufacturer to another. Your best bet is to contact the manufacturer of the Router OR review the owner's manual that may have accompanied it and get your answer.

Axel F.

Most Wi-Fi routers will show the MAC addresses of the clients connected. Check the Wi-Fi doc for details.

While you’re checking the Wi-Fi doc and settings, also check for and apply firmware updates from the vendor.

Alternatively, change the Wi-Fi password, and wait for the complaints to roll in.

If you do change the Wi-Fi password, go with sixteen or more character Wi-Fi passwords, and minimally with WPA2 AES.

And you can AirDrop Wi-Fi credentials to other folks using Apple gear, if you want to re-share access.