There are two ways of adding picons to your channels, by service reference or service name as you can see in the examples below.
Service Reference Service Name
Transfer your picons to a microSD card with your desired format, either by service reference or service name.
Now go to Settings -> Apps
Look for the application called Google Play Store and open it
After opening the Google Play Store search for a File manager application (in this example we will be using ES file explorer) and open it.
Plug the Sdcard with your picons to your WeTek Air.
Inside the file manager, navigate to your microSD Card and you should find all your picons, select and copy all of them.
Go to Internal Storage and select WeTV
Inside the WeTV folder select logos
Inside the Logos folder, paste all the logos that you've previously copied from the SDcard.
Now reboot you device
The next time you open your WeTV application the Picons should be displaying correctly.