What's in the Box?


⚠️ Important Notice: Currently, devices running Xiaomi HyperOS or Huawei HarmonyOS are not supported.
⚠️ Important Notice: Currently, devices running Xiaomi HyperOS or Huawei HarmonyOS are not supported.
• Please ensure your phone is running Android 9.0 or higher; older versions do not support this product.
• Before purchasing, search for "Mars eSIM" on the Google Play Store; if you cannot find it or it says "Your device is not compatible," please do not purchase.
• Confirm your phone is not SIM-locked; devices locked to specific carriers (such as contract phones) will not work.
• This product is a physical eSIM card only and does not include any data or internet plans; plans must be purchased via the app after receiving the card.
• This card requires a physical SIM slot; if you have a single-slot phone and want to keep your original number, please convert your current SIM to an eSIM first to free up the tray.
• If your phone has dual SIM slots, please note that it cannot support two Mars eSIM cards at the same time; only one card can be used per device.
• In accordance with the Consumer Protection Act, this product is eligible for a seven-day "cooling-off period" (appreciation period) starting from the day after delivery. However, this period is for inspecting the packaging and appearance only, not for trial use; the product must remain unopened.
• Items returned must be in brand-new condition with complete packaging. If the protective film has been removed, the SIM card has been detached from its frame, the packaging is damaged, or the card has been installed via the App, it is considered used and will not be eligible for return.
• If a non-human-caused defect (such as physical damage or failure to read) is found within seven days of receipt, we will provide a free replacement once our customer service team verifies the defect.
• Once a return is approved by customer service, please ship the product back to our designated address within seven days. You must use a trackable shipping method (such as registered mail or courier) and ensure the packaging is secure; returns will no longer be accepted if sent more than seven days after approval.
• After receiving the returned item, we will conduct an inspection. If it meets the return criteria, the refund process will be handled within 7-14 working days. Please monitor notifications from your issuing bank regarding the credit refund.
• The maximum refund amount is the total amount of the original order.

【Android】Mars eSIM Physical Card
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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9.2 cm x 6 cm
Unlimited eSIM downloads
Around 10 eSIM profiles
Support for offline activation and deactivation


Need More Info? Visit Our FAQ.
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.
No. The Mars eSIM Card provides the eSIM functionality only and does not include any pre-installed data plans. After receiving the card, you will need to purchase a plan from the Mars eSIM Store or scan an eSIM QR Code provided by another carrier to install it. You will be able to access the internet once the plan is activated.
Yes. To ensure the best user experience, please use the Mars eSIM App to manage your plans. We strongly recommend avoiding your phone’s built-in eSIM management tools to prevent potential compatibility issues. You can download the Mars eSIM App for free from the Google Play Store to easily manage multiple eSIM profiles.
It is not recommended at this time. The core functions of the Mars eSIM—such as downloading and managing eSIM plans—must be performed through our dedicated Android App. Currently, iOS devices do not support this app, making it impossible to install or manage plans on an iPhone or iPad.
Currently, we only support the use of one Mars eSIM Card per device. However, a single card can store between 8 to 10 eSIM profiles. Whether you are traveling for business or leisure, you can enjoy hassle-free internet access by easily switching between your saved plans.
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.