Welcome to the community!
Our TPG mobile application is currently under development and we yet to receive a release date for the new version. If you would like to access the account, you may login using our "My Account" website; https://www.tpg.com.au/home/myaccount.
We also did an article that you may find helpful this will give you details on how to check your mobile data usage.
Please see this link below.
Checking Your Mobile Usage
Let us know should you require further assistance. Cheers!
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