Product Specifications

Size

9.2 cm x 6 cm

System Compatibility
  • System Requirements: Supports Android 9.0 or higher.

  • Hardware Restrictions: Compatible with Android devices equipped with a physical SIM slot.
    Does not support carrier-locked devices (SIM-locked).

  • Management Tool: Must be used with the exclusive Mars eSIM App for downloading and switching data plans.

⚠️ Important Notice: Currently, all devices purchased in Mainland China and those running Huawei HarmonyOS are not supported.

eSIM Download Limits

Unlimited eSIM downloads

Storage

Store up to 10 plans (depending on actual file size)

Offline Management

Support for offline activation and deactivation

Load video: Load video:

FAQs

Need More Info? Visit Our FAQ.

What is the difference between a Mars eSIM Card and a standard SIM card?

Physically, they look identical and fit into the same SIM slot. The difference lies in their function: a standard SIM card is pre-linked to a specific carrier and data plan, whereas the Mars eSIM Card is a physical bridge that enables eSIM capabilities on your device. It arrives blank, allowing you to install and switch between international eSIM plans via an app. This effectively brings eSIM functionality to Android phones that don't natively support it.

Does the Mars eSIM Travel Card come with a pre-loaded data plan?

Yes! Before shipping, we will preload your selected 5G unlimited data plan onto the card.


Once you receive the card, simply insert it directly into your phone’s physical SIM slot. It will automatically connect to the network when you arrive at your destination, providing a true plug-and-play experience.

How soon must the preloaded plan be activated after purchase?

The preloaded plan must be activated within 90 days of the order date by connecting to the internet at a covered destination. If you do not connect to the local network within 90 days, the preloaded plan will expire. We recommend placing your order only after your travel itinerary has been confirmed.

Do I have to use the Mars eSIM App with the Mars eSIM Physical Card?

When using the preloaded unlimited data plan, downloading the App is not mandatory. You can access the internet immediately simply by inserting the card into your phone.However, we still recommend using it alongside the App as the interface allows you to monitor the plan's status and expiration date at any time.

Once the preloaded plan ends, you will need the Mars eSIM App if you wish to reuse the card to install and manage multiple new global plans.

Can I use it with an iPhone or iPad?

Yes, as long as your iPhone or iPad has a physical SIM slot, you can use the preloaded 5G unlimited data plan directly.


However, once the preloaded plan expires, you must switch to a compatible Android phone to install or manage additional plans through the Mars eSIM App, as these card management features are restricted to Android devices.

My phone has dual SIM slots. Can I use two Mars eSIM Cards at the same time?

• Each phone currently supports the installation of only one Mars eSIM physical card.

• The Mars eSIM physical card can store 8 to 10 different eSIM data plans.

• Whether for business or travel, you can switch plans anytime via the app without the need to swap physical cards.

What happens to my original number if my phone only has one SIM slot?

Since the Mars eSIM Card occupies the physical SIM slot, you will need to free it up to use our service. If you wish to keep your original number for calls, we recommend converting your primary number into an eSIM through your current carrier. (Many carriers offer the first conversion for free). Once the slot is empty, you can insert the Mars eSIM Card and enjoy its benefits.