Automatic detection
As soon as you enter a Senegalese phone number in Kodo, the app automatically recognizes the operator based on the first digits of the number. So in most cases, you don't need to select anything manually.
If the detection doesn't match
It can happen, particularly with numbers ported from one operator to another, that automatic detection isn't accurate. In that case, you can manually select the correct operator before confirming your purchase.
Tip: always check the operator shown before confirming a top-up or plan payment, especially if the number has recently changed operators.