Staying connected when you're on the go should be simple and stress-free. Whether you're embarking on a business trip, backpacking around the world, or taking a much-needed vacation, worrying about SIM cards or roaming fees should be the last thing on your mind. That’s where Airzen comes in. We offer instant access to eSIMs for over 200 countries and regions worldwide, making it easier and more affordable than ever to stay connected. Wondering how it all works? Let us guide you through it.   In This Guide: What is Airzen? What is an eSIM? Does my phone support eSIM? How does Airzen work? What can you do with an Airzen eSIM? Frequently Asked Questions What is Airzen? Airzen is your digital gateway to global mobile connectivity. Founded to revolutionize the travel connectivity industry, Airzen is built by travelers who know first-hand the pain of high roaming fees, hunting for local SIM cards, and the frustration of unreliable service abroad. With Airzen, you can browse and download eSIMs for hundreds of countries and regions—all directly from our app or website. Whether you're heading to Tokyo, Paris, or Cape Town, Airzen lets you download a data plan before you leave and connect instantly when you land. What is an eSIM? An eSIM (Embedded SIM) is a small chip built directly into your phone. Just like a traditional SIM card, it connects your phone to a mobile network. But unlike physical SIMs, eSIMs are 100% digital. Think of it as a downloadable SIM card. You can install an eSIM on your device and activate a mobile data plan without swapping out hardware. Most eSIM-compatible devices also let you store multiple plans, which makes it perfect for frequent flyers and remote workers. SIM vs eSIM: Key Differences eSIM is embedded in your device—no physical card needed. Carrier-independent—you can choose your provider (like Airzen!) if your phone is unlocked. Hard to lose or damage, making it a safer, more convenient option. Does My Phone Support eSIM? Most flagship smartphones made since 2018 support eSIM. You’ll need to ensure your device is both eSIM-compatible and carrier-unlocked. If you’re unsure, check our eSIM Device Compatibility List or reach out to your current carrier to confirm. How Does Airzen Work? Step 1: Choose Your eSIM Using the Airzen app or website, browse available eSIMs by country, region, or global coverage. Key things to check: Data allowance (e.g. 1GB, 5GB, 10GB) Validity period (e.g. 7, 15, 30 days) Coverage location Price Need more data later? Most Airzen eSIMs include top-up options directly in the app. Step 2: Install Your eSIM Once purchased, you'll receive step-by-step instructions for installing your Airzen eSIM. You’ll need a stable Wi-Fi connection to begin. You can install it in three ways: Directly via the Airzen app (for supported devices) QR code sent to your email or shown in-app Manual entry using details provided Label your eSIM clearly (e.g., \"Spain Trip\") so you can easily identify it later. Step 3: Activate Your eSIM Depending on the activation policy, your eSIM may either: Activate immediately upon installation Activate once connected to a local mobile network at your destination Check the plan details before installation to avoid starting your plan too early. Step 4: Connect to a Network After landing: On iPhone: Go to Settings > Cellular Select your Airzen eSIM Tap Turn On This Line Enable Data Roaming Manually select a supported network if needed On Android: Go to Settings > Network & Internet Select Mobile Network and enable the Airzen eSIM Turn on Mobile Data and Data Roaming Select a supported network manually if required What Can You Do with an Airzen eSIM? Once connected, your Airzen eSIM opens up the digital world: Navigate unfamiliar cities with Google Maps Use ride-hailing apps like Uber or Bolt Stream music and video Book tickets and reservations online Access emails and take video calls Use your phone as a mobile hotspot Post to social media in real-time Avoid high roaming fees while keeping your primary number active Top up directly in the Airzen app if needed Frequently Asked Questions What is Airzen? Airzen is a global eSIM provider offering affordable, contract-free mobile data plans in over 200 countries and regions. We help travelers stay connected with ease. How does an Airzen eSIM work? An Airzen eSIM connects you digitally to local mobile networks at your destination. Download the eSIM to your device, activate it, and enjoy seamless data without swapping physical SIM cards. How do I use Airzen? Download the Airzen app, choose a plan, install the eSIM, and activate it before or after landing at your destination. No contracts, no roaming shock, no hassle. Can I track usage or top up my data? Yes! The Airzen app lets you monitor data usage in real-time and purchase top-ups whenever needed. Ready to Travel Smarter? Explore Airzen eSIMs today and discover a better way to stay connected—no matter where you roam.