How to Activate Your Telstra SIM Card at

Activating a new Telstra SIM is a piece of cake. This little guide will walk you through everything you need to get set up with Telstra’s prepaid or postpaid plans so you can start enjoying their fast 4G and 5G networks.

We’ll cover:

  • What to have on hand before activating
  • Step-by-step instructions for pre-paid and post-paid
  • FAQs about the process

I’ll try to make it simple and conversational – just the way I’d explain it to a friend. Sound good? Let’s do this!

Pre-Activation Checklist

Before we start, make sure you have:

  • Your new Telstra SIM’s serial number (on the back of the SIM kit)
  • Your ID
  • Your contact details
  • A device to access
  • A stable internet connection

And that’s it! Okay, now that we’ve got the essentials, let’s walk through activating your shiny new SIM.

Activating Your Pre-Paid SIM Card at

I’ll be straight with you – Telstra makes the prepaid activation process super straightforward. Just follow these steps:

  1. Open any web browser and go to
  2. Scroll down and click Activate my Pre-Paid Service
  3. Enter your 13-digit SIM serial number
  4. Click Check Serial Number
  5. Choose if you want a new number or to transfer your existing number
  6. Select if this is for a mobile phone or data-only device
  7. Enter your ID information when prompted
  8. Provide your contact details and pick a plan
  9. Complete the recharge
  10. Confirm everything looks right and click Activate

You’ll get a confirmation text or email when it’s done.

Pro Tip: It can take up to 4 hours for service to fully activate, so be patient!

Transferring Your Number?

If you’re bringing your number over from another provider, it can take up to 48 hours for the number port to finish. In the meantime, you may be assigned a temporary number. Once the port completes, your old number will replace the temp one automatically. Easy! Activating Post-Paid Service

Post-paid setup only takes a few quick steps:

  1. Head to
  2. Click Activate my post-paid service
  3. Pop your new SIM into your phone
  4. Enter your mobile number
  5. Click Activate and follow any remaining prompts

And that’s seriously all there is to it! You’ll be up and running on Telstra’s fast, reliable network in no time.

Note: Business customers should contact Telstra to activate post-paid service.

Frequently Asked Questions

Got questions? Here are some quick answers to common activation questions:

Can I activate prepaid with my Telstra ID?

Sure can! Just sign in at instead of entering your SIM number. The rest is the same.

How do I contact Telstra support?

You’ve got options:

  • Call 1(877) 835 — 7872
  • Chat with an agent on

Hope this short-and-sweet walkthrough gives you everything you need to get your new Telstra SIM up and running! Let me know if any other questions pop up.