Activate your mobile

Activate your service

Activating your service is easy. Simply choose the service type you need to activate and follow the instructions.

What type of service would you like to activate?

Activate a new Pre-Paid physical SIM card

If you're looking to move your mobile service to Telstra from another provider, you'll need to be able to receive calls and texts on your current service. If you are currently unable to receive calls and texts, activate a new eSIM service and you could be back online in as little as 10 minutes with the My Telstra app.

To activate a replacement SIM

To activate a physical replacement SIM for an existing Pre-Paid service:

  1. Insert your new SIM

  2. Sign in or download the My Telstra app

  3. Activate your SIM

New Post-paid physical SIM activation

Insert your new SIM into your device. If the SIM is for a new service, it will automatically activate once you accept delivery.

Note: It can take up to four hours to complete activation. If your service hasn’t activated in this time, switch your device off and on again.

Activate a physical SIM when moving from another provider to Telstra

  1. Insert your new SIM

  2. Sign in or download the My Telstra app

  3. Activate your SIM

To activate your SIM later

If you don’t want to activate your SIM now, you can do so later or, wait until your service is automatically activated seven days after your delivery is confirmed. If you choose to wait for the automatic activation, continue using your current SIM until your Telstra SIM is active.

Activate a replacement SIM

Upfront plans

If you're on a month-to-month plan, and pay each month using AutoPay, then you’re on an Upfront plan.

  1. Insert your new SIM
  2. Sign in or download the My Telstra app
  3. Activate your SIM

Other plans

If you're on a month-to-month plan and pay for your service via a bill, then you're not on an Upfront plan.

Please call 13 22 00 to activate your replacement SIM. SIM replacements cannot be activated by our Messaging teams.

eSIM. The simpler SIM

Getting connected with eSIM is quicker, simpler and more eco-friendly. 
Learn how to activate an eSIM or check if your device is eSIM compatible on our dedicated eSIM page.

Questions about Telstra mobiles?

My Telstra app

View your services, pay your bill, troubleshoot tech issues, contact us via messaging and much more.


More information about mobile phones can be found in our Support section.

Send us a message

Want help with your SIM? Get in touch and we'll help you as soon as we can.

Contact us

We're here to answer your questions.