Support centre
Mobiles & devices
Whether you’re on a month-to-month or Pre-Paid plan, you’ll find your answers here.
How can we help with your plan or device?
Activation & getting started
- What’s a Telstra One Number and how do I manage it?
- Can I put my SIM into another device?
- FAQs on eSIM for iOS, Android and Windows, and dual SIM
- How do I switch or transfer my mobile service to Telstra?
- How do I activate my post-paid SIM card?
- How do I activate my Pre-Paid SIM card?
- Can I change my mobile number?
- What’s a cooling off period?
- How do I set-up and use voice-activated calling with Google Nest?
Plans & upgrades
- How do I cancel my mobile or mobile broadband service?
- How do I check my mobile or tablet plan?
- Can I change my Pre-Paid service to post-paid, or vice-versa?
- How do I change my mobile plan?
- How do I buy a Data Pack or International Calling Pack?
- What is extra data and how is it different to excess data charges?
- How do I check and manage my mobile data usage?
- Can I pay for a mobile phone or tablet in monthly instalments?
- How do I upgrade, swap or trade in my device?
- How do I track and get updates about my online order?
Pre-Paid
Roaming & security
Device settings & troubleshooting
- What’s the mobile 4G Smart Antenna and how do I install it?
- What can I do if my mobile reception is interrupted?
- How do I troubleshoot and fix an issue with my mobile device?
- How can I extend my mobile device's battery life?
- 3G closure – what do I need to know?
- FAQs on Telstra Wi-Fi calling and SMS
- How do I set up and manage MessageBank®, call forwarding and extended ring time?
- How do I retrieve my PUK code or IMEI number to unlock my SIM card or phone?
- How do I manage caller ID on my mobile service?
- How do I use my phone as a Wi-Fi hotspot?