You must first of all have downloaded the Orange Yame application.
From Orange Yame web app
1. Go to http://yame.orange.co.bw/
Enter *155# from your mobile and confirm by pressing Send/Yes/Ok.
Your current credit will then be immediately displayed directly on your screen.
Enter *101# from your mobile and confirm by pressing Send/Yes/Ok and then all your balance will be displayed.