Here's an article to guide you in activating your SIM.
For further assistance, let us have your Account number or mobile number via private message so we can have a member of our Mobile Support Team to contact and assist you.
Hi, I have received the TPG mobile SIM card, but still yet to activate.
Unfortunately my current used SIM card was already expired and out of service, I cannot call customer service for further assistance, just wonder how long can I activate the SIM card to resume my mobile service.
Thank you for your assistance.
Ming Kei Ma