Frequently Asked Questions

An eSIM (embedded SIM) is a digital SIM card that's built into your device. Unlike physical SIM cards, you don't need to insert or swap cards - everything is done digitally. You can activate mobile plans instantly by scanning a QR code or using an app.

When you purchase an eSIM plan, you'll receive a QR code or activation details via email. Simply scan the QR code with your device's camera or enter the details manually in your device settings. Your eSIM will activate instantly, giving you data connectivity without the need for a physical SIM card.

Most modern smartphones and tablets support eSIM technology, including iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, and many iPad models. Check our Compatible Devices page for a complete list, or go to your device settings to see if you have the eSIM option.

Yes! Most eSIM-compatible devices support dual SIM functionality, allowing you to use both your physical SIM and eSIM simultaneously. This is perfect for keeping your home number active while using a local data plan abroad.

Simply browse our destinations, select your country, choose a data plan that suits your needs, and complete the checkout process. You'll receive your eSIM QR code and activation instructions via email within minutes.

You can install your eSIM anytime before your trip, but it's best to wait until you arrive at your destination to activate it. The validity period typically starts when you first connect to a network in your destination country.

Your eSIM is delivered instantly via email after purchase, usually within 2-5 minutes. You'll receive a QR code and detailed installation instructions.

We accept all major credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, Google Pay, and various cryptocurrency options including Bitcoin, Ethereum, and USDT.

Installation is simple: 1) Go to Settings on your device, 2) Select Cellular/Mobile Data, 3) Tap 'Add Cellular Plan' or 'Add eSIM', 4) Scan the QR code from your email or enter details manually. Detailed step-by-step instructions are provided with your purchase.

Yes, we recommend installing your eSIM before you travel. You can install it anytime, but remember not to activate it (turn on data roaming for that line) until you arrive at your destination.

If you can't scan the QR code, you can install your eSIM manually. We provide manual activation codes (SM-DP+ Address and Activation Code) in your email. Simply enter these details in your device's eSIM settings under 'Enter Details Manually'.

No, you don't need to remove your eSIM. You can simply switch back to your primary SIM card in your device settings. The eSIM will remain installed and can be used again if you return to the same destination.

It depends on your usage. Light users (messaging, maps): 1-3GB. Moderate users (social media, browsing): 3-7GB. Heavy users (video streaming, video calls): 10GB+. Use our Data Calculator tool to get a personalized recommendation based on your usage patterns.

When you run out of data, your connection will stop. You can purchase a top-up or a new plan directly through our website or app. Some plans offer the option to add more data before they expire.

Most of our plans are data-only, which means they don't include traditional voice calls. However, you can use data-based calling services like WhatsApp, FaceTime, Skype, or any VoIP app to make calls.

Yes! Your original phone number stays active on your physical SIM. The eSIM provides data connectivity only, so you can still receive calls and texts on your regular number while using the eSIM for data.

No, eSIM plans are single-user and device-specific. Each person traveling needs their own eSIM. However, if your device supports hotspot functionality, you may be able to share your connection, though this depends on the specific plan terms.

We offer eSIM coverage in over 190+ countries worldwide, including popular destinations across Europe, Asia, Americas, Africa, and Oceania. Check our Destinations page for the complete list and available plans for each country.

We partner with premium local carriers in each country to ensure the best coverage and speeds. Your device will automatically connect to the strongest available network. You can find specific network details on each country's plan page.

Yes, most of our plans include 4G LTE speeds, and 5G is available in supported countries and devices. The actual speed depends on local network coverage and your device capabilities.

Coverage depends on the local carrier's network infrastructure. We partner with leading carriers to provide the widest possible coverage, but as with any mobile service, remote or rural areas may have limited connectivity.

First, ensure you've activated the eSIM in your settings and turned on data roaming for that line. Restart your device and make sure you're in an area with network coverage. If issues persist, check that your device is unlocked and not restricted by your home carrier.

Slow data can be caused by network congestion, weak signal, or being in a crowded area. Try moving to a different location, restarting your device, or toggling airplane mode on and off. If problems persist, contact our support team.

Yes! Keep your original email with the QR code and installation details. You can reinstall the eSIM by scanning the same QR code again. If you can't find the email, contact our support team with your order details.

No, each eSIM can only be installed on one device at a time. If you need connectivity for multiple devices, you'll need to purchase separate eSIMs for each device.

We offer various plan options, including some unlimited plans in select countries. Check the specific country page to see all available plans and their data allowances.

Plan validity varies from 7 days to 30 days, depending on the specific plan you choose. The validity period typically starts when you first connect to the network at your destination.

You can purchase a new plan before your current one expires, or buy a top-up if available for your destination. We recommend purchasing before your plan expires to ensure uninterrupted service.

No hidden fees! The price you see at checkout is the final price. There are no activation fees, roaming charges, or surprise costs.

Due to the digital nature of eSIMs, refunds are generally only available if the eSIM hasn't been installed or activated. Please review our refund policy or contact support for specific cases.

You can reach our support team at team@teraroma.io. We typically respond within 24 hours. For urgent issues, we also offer live chat support through our website.

Creating an account is optional but recommended. With an account, you can easily manage your eSIMs, view your purchase history, and redownload QR codes if needed.

You can check your data usage in your device settings under Cellular/Mobile Data. Some of our eSIM plans also provide data tracking through our app or customer portal.

Top-up options depend on the specific plan and destination. Some plans allow you to add more data or extend the validity period. Check your plan details or contact support to see if top-ups are available.