In a few minutes, you’ll be up and running, ready to travel and save on roaming charges.


  1. Ensure your mobile phone is charged & in area of good cellular coverage.
  2. Your phone must be unlocked from your wireless carrier. This is a different ‘unlocking’ than a screen lock. Having an unlocked phone allows your phone to accept other wireless carriers’ SIM cards. Learn more about unlocking your phone in our FAQ section.
  3. Ensure call-forwarding service is active on your account. If you are not sure, please check with your wireless carrier.
  4. Have access to on a device other than on your phone. You’ll need to activate your GLOBAL1 Overlay SIM card after you’ve installed it and put an initial top-up of $10USD on your account. This is best done on a computer or tablet.

Ready to start – follow the instructions below.

  1. Turn your mobile phone off. Remove existing SIM card. Set aside.
  2. Remove SIM plastic card holder from package. Remove cover film.
  3. Remove adhesive tab from the GLOBAL1 Overlay SIM.
  4. Pick up your existing SIM you previously set aside. Line up the notch on your SIM card with the notch on the GLOBAL1 Overlay SIM. Press the SIM cards together.
  5. Slide combined SIM cards off plastic card. Re-insert into phone. Put the cover back on your phone and turn it on.
  6. GLOBAL1 will connect to our network for its first initialization. After that process runs (it’ll just take a couple of minutes), you’ll receive a welcome SMS.
  7. The welcome SMS assures you that your GLOBAL1 Overlay SIM card is working and connected to our network. You’re almost done.
  8. On the website, click “activate card” (button at top right of each page on the website) to complete activation and make an initial top-up payment. Create an account and assign a credit card to it. A credit card is needed as the GLOBAL1 service is pay-as-you-go. Once this is complete – your GLOBAL1 service is activated. You are ready to travel.