Checking your balance on 02 is a simple and convenient way to keep track of your account activity. There are a few different ways to do this, depending on your preference.
One way to check your balance is to use the My02 app. This app is available for free on the App Store and Google Play. Once you have installed the app, simply log in with your 02 account information. You will then be able to see your balance, as well as other account information, such as your call history and data usage.