# eSIM Go Fly — Frequently Asked Questions > Answers to common questions about travel eSIMs sold by eSIM Go Fly: compatibility, activation, validity, data usage, payment, refund. **Canonical HTML page:** https://esimgofly.com/th/faq ## พื้นฐาน eSIM ### What is an eSIM? An eSIM (embedded SIM) is a digital SIM card built directly into your device. It lets you activate a mobile data plan without a physical SIM card. Simply scan a QR code or tap a link, and you're connected. Perfect for travelers who want to avoid expensive roaming fees. ### How do I know if my phone supports eSIM? Most smartphones released after 2018 support eSIM: iPhone XS and newer, Google Pixel 3 and newer, Samsung Galaxy S20 and newer. Go to Settings > Cellular (or Mobile Data) - if you see "Add eSIM" or "Add Data Plan", your device is compatible. ### My phone is carrier-locked. Can I use an eSIM? Your phone must be unlocked to use a travel eSIM. Contact your carrier to request an unlock before your trip. Once unlocked, you can install eSIMs from any provider. ## การติดตั้งและเปิดใช้งาน ### How do I install my eSIM? You have two easy options: Direct Link (Easiest): Tap the iPhone or Android button in your email or account. It opens your phone settings automatically - just confirm the installation. QR Code: Open the QR code on another screen and scan it with your phone camera in Settings > Cellular > Add eSIM. Then enable data roaming and you're ready! ### When should I install my eSIM? Install your eSIM before departure while you have WiFi or mobile data. The download only takes a few seconds. Once installed, simply activate it when you arrive at your destination. ### Do I need to enable data roaming? Yes, data roaming must be enabled for your eSIM to work abroad. Don't worry - there are no extra charges. This setting just allows your phone to connect to local networks. Go to Settings > Cellular > your eSIM > enable Data Roaming. ### My eSIM shows "No Service". What should I do? Check these steps: 1) Enable data roaming, 2) Set your eSIM as the default data line, 3) Toggle Airplane mode on/off, 4) Restart your phone. If the issue persists, contact our 24/7 support. ## ประเภทแพ็กเกจ ### What's the difference between Unlimited and Limited plans? Unlimited Plans: Daily high-speed data (e.g., 1GB/day, 2GB/day) that resets every 24 hours. Choose from 1 to 30 days. Ideal for longer stays. Limited Plans: Fixed data volume (e.g., 5GB, 10GB) for a set validity period. Best for short trips or backup data. ### How does Fair Use Policy (FUP) work on unlimited plans? FUP ensures fair network usage for everyone. Here's how it works: • You get full 4G/LTE speed up to your daily limit (e.g., 1GB or 2GB) • After reaching the limit, speed is reduced but you stay connected • Your high-speed allowance resets every 24 hours at midnight local time Reduced speed is still usable for messaging, email, maps, and light browsing. ### Should I choose Unlimited or Limited? Choose Unlimited if you're staying several days and want predictable daily data for streaming, maps, or social media. Choose Limited if you're on a short trip (1-7 days), mainly use WiFi, or prefer a simple one-time data package. ## ข้อมูลและอายุใช้งาน ### When does my eSIM validity start? Your validity period starts when you first connect to a network at your destination - not when you purchase or install. For example, a 7-day plan gives you 7 full days from first connection. ### What happens when my data runs out? Limited plans: Purchase a top-up from your account. The extra data is added to your existing eSIM instantly. Unlimited plans: Your daily allowance resets every 24 hours, so you never truly run out. ### Can I top up or extend my plan? Yes! Log into your account and select "Top Up" next to your plan. You can add data before or after your plan expires. The top-up applies automatically to your existing eSIM. ## ฟีเจอร์ ### Can I use hotspot/tethering? Yes, most plans support hotspot and tethering. Share your connection with laptops, tablets, or other devices. No hidden fees - you simply use your purchased data. ### Can I make phone calls? Our eSIMs are data-only. For calls, use apps like WhatsApp, FaceTime, Skype, or Zoom over your data connection. Your original SIM stays active for regular calls and SMS. ### Can I use one eSIM in multiple countries? Yes! Our regional and global plans work across multiple countries. Your data works seamlessly as you cross borders - perfect for multi-destination trips. ### Can I store multiple eSIMs on my phone? Yes, most devices can store several eSIM profiles. Only one can be active at a time, but you can easily switch between them in Settings. ## การชำระเงินและสนับสนุน ### What payment methods do you accept? We accept Visa, Mastercard, American Express, PayPal, Apple Pay, and Google Pay. All transactions are secure and encrypted. ### What is your refund policy? Full refund within 14 days if your eSIM hasn't been activated. Once activated, eSIMs are non-refundable except for major technical issues. See our refund policy page for details. ### What network quality can I expect? We partner with leading local operators in each country. You'll typically connect to 4G/LTE networks, with 5G available in many regions. Speed and coverage may vary by location. --- *This Markdown document is the AI-readable variant of https://esimgofly.com/th/faq. Site: eSIM Go Fly.*