Hi @Nilo1378,
Thanks for raising this with us.
We recommend switching off Mobile Data when connected to your WiFi to avoid any background data usage.
You can check your Data usage via the My Optus App/My Account. The My Optus App shows the Data Breakdown to help understand & manage your data usage.
If you’re still needing a hand, we recommend messaging us via the My Optus App. The team is available 24/7 and are ready to assist customers as quickly as possible.
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