CUI‑Switch: One Adapter, Every Network

Turn any device into a privacy‑first eSIM powerhouse. With CUI‑Switch, browse and load the world’s best eSIM plans like flipping channels—no hardware upgrades, no tracking, full Android and iOS compatibility.

  • ESIM ENABLED

    Unleash seamless, global connectivity from any eSIM providers.

  • ALL DEVICE TYPES

    Manage eSIM profiles across all devices anytime, anywhere

  • PRIVACY FIRST

    No servers, no logins or sign ups required, your privacy is guaranteed.

What can CUI cards do for you?

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    Modernize your device with eSIM capabilities

    Insert the CUI adapter to enable eSIM functionality on any connectivity device. Seamlessly connect to providers around the world and unlock global connectivity like never before

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    Choose and switch networks anytime

    With CUI cards, search and compare eSIM profiles from various providers to find the best deals for each country, region, or worldwide. Purchase and download them directly to your device.

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    Keep multiple numbers in one place

    Carry up to 15 eSIM profiles with CUI cards and avoid the hassle of swapping physical SIM cards. With our app, you can switch between eSIM profiles in just a few steps.

Want to switch physical SIM to eSIM?

Here are 3 easy steps for Switch users.

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    Step 1: Just insert the CUI Card into the SIM card slot. Reboot your device if needed.
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    Step 2: Download the Switch app and follow the steps to set up your account.
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    Step 3: Once registration is complete, you can start downloading eSIM profiles.

CUI Cards are designed for everyone, in every scenario and works with 99% eSIM providers

  • Use CUI cards on

    • Routers
    • Mifi Devices
    • Powerbanks
    • GPS Tracker
    • Security Cameras
    • Smart Meters
    • Vending Machines
    • Handheld Devices
    • Automotive
    • Lawnmowers
    • And More

  • Designed for

    • Travelers
    • Digital Nomads
    • Students
    • Restaurants
    • Food Trucks
    • Farms
    • Warehouses
    • Campers
    • Boaters
    • Caravans
    • And More

  • Download eSIM from

    • China Mobile
    • Vodafone
    • AT&T
    • Airalo
    • Holafly
    • Ubigi
    • Jio
    • Airtel
    • MobiMatter
    • Gigsky
    • And More

You Ask — We Tell

  • What is eSIM?

    eSIM is a type of SIM card that is permanently embedded into new smartphones, tablets, and other mobile devices.

  • What is CUI card?

    CUI card is a new technology that makes your existing smartphone compatible with eSIM.

  • Is the Switch Card only compatible with Android devices?

     The Switch eSIM is compatible with both Android and iOS devices.

  • What is an eSIM Profile?

    An eSIM profile contains the number and data information that is written onto the eSIM card. Once the eSIM profile is installed, the eSIM functions just like a regular SIM card.

  • Can my devices be converted to support eSIM?

    Yes, you can achieve this using the CUI card. With the CUI card, your smartphone can download, manage, and read eSIM profiles.

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