How to View All Computers on a Network Even If They Are in a Different Workgroup. Computers that are connected to the same local area network and reside on the same workgroup or homegroup can see ...

To avoid all this, make sure each device connected to the network is one you trust. Thankfully, there are free tools that will help you see everyone on the network right now.

Wait for your iPhone to reboot and reset all the network settings. This process shouldn't take more than a couple of minutes. Afterward, you should be able to configure network settings from scratch.