eSIM Guide for Travelers
So sánh 5 nhà cung cấp eSIM hàng đầu theo giá, vùng phủ sóng và dung lượng. Không cần mua SIM tại sân bay nữa — quét mã QR trước khi bay và kết nối ngay khi hạ cánh. Bao gồm mẹo cho Trung Quốc, châu Âu và châu Á.
What is eSIM?
eSIM (embedded SIM) is a digital SIM built into your phone. No need to buy a physical SIM card at the airport. Just purchase online, scan a QR code, and you are connected instantly. Most modern smartphones (iPhone XS+, Pixel 3+, Samsung S20+) support eSIM.
Top eSIM Providers
Airalo
$4.50~The largest eSIM marketplace. Local, regional, and global plans. Best variety and coverage.
Holafly
$6~Unlimited data plans. Great for heavy users who stream or need constant connection.
Nomad
$5~Simple pricing, good regional plans for Europe and Asia. Easy-to-use app.
Ubigi
$4~Wide coverage including remote destinations. Pay-as-you-go option available.
aloSIM
$4.50~Budget-friendly with flexible data amounts. Good for short trips.
Tips Before You Buy
- 1. Check if your phone supports eSIM and is SIM-unlocked.
- 2. Buy and install the eSIM before departure — some require WiFi to activate.
- 3. Screenshot the QR code in case you need it offline.
- 4. For China, most eSIMs do NOT bypass the Great Firewall — you still need a VPN.
- 5. Compare data amounts: 1GB lasts ~7 days for light use (maps, messaging).