Help Center

To purchase a Tello SIM card, you first need to confirm device compatibility through our device checker page.
This checker cannot check if your device is unlocked so you will need to confirm that with your previous provider or the device seller.

• When you see the "Awesome" message click "Continue"
• On the Checkout Page click "Buy SIM"
• Assuming the SIM is for a new line, select NEW LINE from the dropdown menu
• Fill in any other required fields and "Finalize Order."

When you purchase a Tello GSM SIM, you receive a 3-in-1 SIM card that includes mini (2FF), micro (3FF), and nano (4FF) sizes to fit any type of compatible phone.
You receive 1 SIM card and that 1 SIM card contains the three different sized punch-out SIM options.

When the new Tello SIM card arrives, first activate the service in your online account, insert the new SIM, follow the on-screen prompts & start using the service.

Tello Phone Number & Porting
Every SIM delivery for a new line generates a new Tello phone number once activated. You will see a new Tello phone number in your online account when the activation process is completed.
You will not be able to port in a new number (to replace that Tello number) until you have successfully activated that SIM in your online account.
Only after you have successfully activated the SIM in your online account, you can port in your own number to us by submitting a port-in request
The port-in form will only become available & visible after a successful SIM activation and it can only be done from your online account.

Tello CDMA SIMs and SIMs from other providers will not work on the Tello network.
Only a Tello SIM will work.