[30% Off] USA & Hawaii eSIM | AT&T / T-Mobile
- Supports iOS one-click installation: Update to the latest version of the iOS App and iOS 17.4 or above to install eSIM with one click in the KKday App.
- Travel essentials for the US & Hawaii, get a data eSIM without replacing your previous USIM!
- Local coverage is provided by AT&T / T-Mobile.
- Choose a plan from 500MB to 5GB with 4G speeds and select the usage days.
- For more data products, please see USIM & Wi-Fi.
- Please refer to the eSIM product F&Q (including inapplicable devices).
Package Options
Product Info
The content of this product is provided by machine translation and may not reflect the actual information, please take this into consideration before booking.
eSIM applicable models
eSIM Usage/Registration Procedure
SIM Card Specifications
| Data Usage Specifications | Unlimited data, 500MB, 1GB, 2GB, 3GB, 4GB, 5GB |
| Transmission Specifications | 4G |
| Signal Coverage Area | United States(Including Alaska and Hawaii, excluding Guam and Saipan Island) |
| Mobile Carrier | AT&T / T-Mobile |
| Supported Sizes | eSIM |
| Hotspot Sharing | Unavailable |
| Supported Frequencies(4G) | B2（1900 MHz）, B5（850 MHz）, B17（700b MHz） |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Carrier-customized device, Mobile hotspot |
| Reminders | ・Data limit: Speed decreases after 500MB/1GB/2GB/3GB/4GB/5GB per day (unlimited capacity) Validity: The eSIM is valid for 6 months. Once registered, it can be used on the selected dates. |
| Network Type | Roaming |
| Mobile Virtual Network Operator (MVNO) | China Mobile International Limited |
Important Info
Includes/Excludes
Reminders
Please ensure your phone supports eSIM before purchase. Once the eSIM QR code is sent, this product is non-refundable.
Only iOS 12.1 version is supported, and iPhones purchased in mainland China, Hong Kong, and Macau do not support eSIM.
If your phone cannot scan QR codes, please print the voucher in advance or install a QR code app.
The eSIM can be used immediately after installation. During installation, you must be connected to Wi-Fi or a mobile network. It is recommended to install it before departure or use free Wi-Fi at the airport.
The eSIM can be used immediately after installation. After confirming your travel dates, register the eSIM on your selected usage date.
Usage/Registration Procedure: iOS [Korean] https://asset.usimsa.com/kkday/manual/ios-esim-ko.pdf
Usage/Registration Procedure: Android [Korean] https://asset.usimsa.com/kkday/manual/android-esim-ko.pdf
Days Calculation Method: 24-hour system (3-day pass opens (activates) at 10:00 AM on September 1, ends at 9:59 AM on September 4)
How to Use
- How to use
- You can also use your voucher to obtain a verification code.
- Scan the QR code on your phone to install the eSIM.
* Before use, make sure data roaming is enabled.
* If your phone cannot scan QR codes, please print the voucher or install a QR code app in advance.
Please refer to the data on Apple's official page .
If an installed eSIM is deleted, we will notify you in advance. You must rebook, as it cannot be reinstalled.
- FAQ
Q: What if the APN settings do not activate automatically?
A:
1. Follow the APN setup instructions provided in your eSIM voucher.
2. Restart your phone, check if the eSIM is recognized, and confirm the connection.
3. Contact your phone manufacturer or telecom provider to ensure the device is properly unlocked.
4. Check with your domestic telecom provider to confirm that mobile protection services are not interfering.
Validity Period
- Valid for use within 180day(s) from the date of issue; Invalid after expiration
Cancellation Policy
- Once the order has been completed, it cannot be canceled, modified, or refunded
- Due to time zone differences, the confirmed cancellation date is based on the supplier’s local time. Please allow 2–5 business days to process your cancellation request, after which the cancellation fee will be charged according to the product’s cancellation policy. Once the cancellation is confirmed, you will receive your refund within 14 working days.
FAQ
When selecting an eSIM for your trip to the USA and Hawaii, prioritize options with reliable local carrier coverage, such as AT&T or T-Mobile. Look for flexible data plans offering various allowances (e.g., 500MB to 5GB) at 4G speeds, and the ability to choose your usage days to align with your itinerary. Convenient installation methods, like one-click activation without physical SIM swapping, significantly enhance your travel experience.
Yes, USA & Hawaii eSIM plans are primarily designed to provide seamless data connectivity, ensuring you have internet access for navigation, communication, and information during your trip. These plans typically offer various data allowances, ranging from 500MB up to 5GB at 4G speeds. You also have the flexibility to select the specific number of usage days to match the duration of your travel.
A key limitation of using an eSIM is device compatibility, as it requires a newer smartphone model that supports eSIM technology. Some eSIM plans might be data-only, meaning they do not include traditional voice call or SMS services. Additionally, initial eSIM activation typically requires a stable internet connection, and users must select their usage duration in advance, which requires some pre-planning.
The USA & Hawaii eSIM utilizes the robust local network infrastructures of major carriers, specifically AT&T and T-Mobile. This partnership ensures wide-ranging and stable 4G network coverage across the continental USA and throughout the main islands of Hawaii, providing reliable internet access for travelers in diverse locations.
You can conveniently acquire an eSIM by booking through KKday, where you can select your preferred data plan and usage dates in advance. For activation, simply use the one-click installation feature available on the latest version of the iOS App (requires iOS 17.4 or above). This streamlined process offered by KKday makes getting connected hassle-free, eliminating the need for physical SIM card swapping upon arrival and ensuring a smooth start to your trip.
The USA & Hawaii eSIM offers generally reliable 4G network coverage through AT&T and T-Mobile, which are leading carriers with extensive infrastructure. In Hawaii, this means dependable service across popular tourist areas and major islands. While coverage is robust in most developed regions, as with any mobile service, reliability may vary in very remote, mountainous, or less populated areas.
For iOS users, the USA & Hawaii eSIM supports a highly convenient one-click installation process. To utilize this feature, your device needs to be running iOS 17.4 or above, and you must update the iOS App to its latest version. This allows for quick and effortless eSIM activation directly within the App, bypassing manual configuration steps or the need to insert a physical SIM card.
Yes, the USA & Hawaii eSIM requires a compatible device. Generally, most recent smartphone models released by major manufacturers in the past few years support eSIM functionality. It is essential to verify that your specific device model is eSIM-compatible before purchasing to ensure you can successfully install and utilize the service throughout your travels.
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