iOS – Run/Debug/Install builds over Wi-Fi
(Before you read make sure your running IOS 11 and Xcode 9!) Connect your device (Via USB), once you do go on 'Add Additional Simulators' (See image 2 at the bottom), and tick 'connect via network' (See Image One). Once XCode proccesses this, disconnect the device (via USB) and it should now appear with a globe next to it (See image 2)! Also make sure the device and computer are on the same network!
Image 1
Image 2
Using Xcode 9 you can debug over wifi(same network).
Make sure you have at least Xcode 9 or later and a device with iOS 11 or later
1- Open your project on Xcode
2- Plugged in your iPhone with USB cable.
3- Open Window > Devices and Simulators You should see your device as connected devices
4- Select Devices from the top, Select your device from left and Check the “Connect via network” box
5- Now if Xcode can connect to your device via network, you should see a network icon after your phone name
6- Unplug your USB cord
7- Go back to Xcode and Hit the Run button
Now by using Xcode 9 and iOS 11 it is possible to run apps by using Wi-Fi.
Connect the iPhone via USB, go into the device window (Cmd-Shift-2), select your phone, and check the connect via network
box.
More thorough instructions with screenshots here
Pre-Xcode 9 answer:
Over Wi-Fi installing and debugging of applications is not possible in iOS.
But there are some websites where you can upload your builds and then download on device and test it.