To activate your Ultra Mobile SIM card, visit our activation page at ultra.me/activate. Enter the SIM card number and your zip code. Follow the on-screen instructions to create an account or log in. Activation usually completes within minutes. If you need help, contact customer support.

Ultra Mobile includes free calling to over 80 countries with most plans. To make an international call, simply dial 011 + country code + phone number. For countries not included, rates apply. Check the full list of free countries on our website. Ensure you have sufficient balance for calls outside the free zone.

Yes, Ultra Mobile offers eSIM for compatible devices. You can purchase an eSIM plan online and activate it by scanning a QR code sent to your email. Visit our eSIM page to check device compatibility. Note that eSIM is available for select plans and may not be supported on all phones.

You can check your balance by dialing *777 from your phone. Alternatively, log into your online account on our website or use the Ultra Mobile app. The app shows remaining data, talk minutes, and text counts. You can also set up low-balance alerts through your account settings.

When your plan data is exhausted, you will be charged a standard overage rate per MB unless you have auto-refill enabled. You can purchase a data top-up via the app or website. Alternatively, switch to a new plan with more data. Note that unlimited plans may have reduced speeds after the high-speed cap.