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Hi @Davidlam,
I responded to your initial post located here.
Here are some articles that you may find helpful, this will guide you a basic troubleshooting about Mobile Data Issues.
No Mobile Network Coverage?
What to do - TPG Mobile Data Not Working – Android
What to do - TPG Mobile Data Not Working – iPhone
Let us know how it will go.
Regards,
No 4g no body answer while answer say wait worst service thank you for idiot