Are you fedup of connecting Device through USB cable...Here we go???

Let's connect android world wirelessly...!!

Step 1: Connect the device with USB cable into your system. Ensure that USB debugging is enabled from Developer options of your device. Open cmd prompt(windows) or Terminal(linux) run the command. You'll find the connected device.

If you are not able to run this command, make sur you are trying this command in Android sdk directory, where ADB exists- 

adb kill-server && adb devices

Step 2: Run the next command to restart in tcp mode on port 5555

adb tcpip 5555

Step 3: Now disconnect your device from your system and put the cable in bag, note down your ip address of the phone from Setting > About Phone > Status. It could be something like 192.168.0.3.(ip address) Now the run the final command by replacing with your ip address on your command prompt.

adb connect 192.168.0.3:5555

Wohoooo...!!! we're done, now your devices is connected and you can run it wirelessly ;-)