The app developed here will help a user to view their phone number and account details (Account number and account balance).Follow this article to set up a simulator.After you have launched the simulator, go back to your sandbox dashboard and create a channel. A channel will help us to run our implementation. A channel will constitute a Service Code and Callback URL.A Service Code is the USSD code that we are going to type on our simulator and it will call the callback url upon hitting send. You can imagine a situation whereby someone is checking their balance. For instance, they will enter *144# and hit send. The *144# is a Service Code. Upon hitting send, a callback URL will be called, the URL endpoint will help to carry out the needed operations which will be to determine the actual calculation of the balance and return the results.How to create a channelUnder the USSD menu in your sandbox dashboard click Create Channel.
To create a channel you will need acallback URL. A callback URL will be called when a user sends a request using a service code.Create a callback URL