How do I run/test my Flutter app on a real device?

Also, you can use your android device wirelessly using scrcpy.

Visit this link and install scrcpy. https://github.com/Genymobile/scrcpy

After you install and path scrcpy on your PC/Laptop.

1. Make sure your phone is connected to your PC/Laptop.

2. Enable Developers Options and Connect your device to the WIFI.

3. Open CMD.

4. Input "adb tcpip 5555". The adb should be restarted

5. Next, input "adb connect ipaddressofyourdevice:5555" Ex: adb connect 192.168.254.19:5555

Now, you can use your device wirelessly.

For Android, this is pretty easy:

1. Enable Developer options and USB debugging on your device. This varies slightly by Android version, but the short version is you tap on the Device Build Number 7 times. Then a "Developer Options" option comes up and you can click "enable USB Debugging." See the linked Android documentation for the most up-to-date instructions.
2. Then plug your phone into your computer with a USB cable. You'll probably see some popup on your phone asking if you want to allow USB debuggng with that computer. Say "yes".
3. Run Flutter just like you would if you had a simulator running.

For iOS this is a little more complicated because you need an Apple ID or to sign up for a "Developer Account":

1. Open XCode, then open "Preferences>Accounts". Sign in with your ID.
2. "Manage Certificates" > click on the "+" sign and select "iOS Development".
3. Plug your device into your machine. Find your device in the drop down (Window > Organizer).
4. Below the Team pop-up menu, click Fix Issue.
5. In Xcode, click the Run button.

(in subsequent runs, you can deploy to the iOS device with Android Studio, VS Code, or any other IDE of choice, you just need to set up that certificate the first time with Xcode. Here's Apple's documentation on setting up Xcode to run a physical device.)