How eSIM Works
Discover the future of mobile connectivity. Learn how eSIM technology revolutionizes the way you stay connected while traveling the world.
What is an eSIM?
An eSIM (embedded SIM) is a digital SIM card that's permanently embedded in your device. Unlike traditional physical SIM cards, eSIMs can be programmed remotely to connect to different mobile networks.
This revolutionary technology eliminates the need for physical SIM cards, allowing you to switch carriers or add new plans instantly through software.
Instant Activation
No waiting for physical SIM delivery or store visits
Global Coverage
Stay connected in 190+ countries with local rates
Secure Connection
Enterprise-grade security with encrypted data transmission
Flexible Plans
From 7 days to 365 days, choose what fits your travel
eSIM vs Traditional SIM
Traditional SIM
- Physical card required
- Manual installation
- Can be lost or damaged
- Limited to one carrier
- Store visits required
eSIM
- Digital profile
- Remote activation
- Cannot be lost
- Multiple carriers
- Instant online setup
Simple 4-Step Process
Get connected anywhere in the world in just a few minutes with our streamlined process
Choose Your Destination
Browse our extensive catalog of eSIM plans covering 190+ countries and regions worldwide.
- Select from single-country or multi-country plans
- Choose data allowances from 1GB to unlimited
- Pick validity periods from 7 days to 365 days
- Compare prices across different carriers
Complete Your Purchase
Secure checkout with instant delivery of your eSIM QR code and activation instructions.
- Secure payment processing with encryption
- Instant email delivery within seconds
- No hidden fees or binding contracts
- 24/7 customer support included
Scan QR Code
Use your phone's camera to scan the QR code and automatically install your eSIM profile.
- Works with all eSIM-compatible devices
- Automatic network configuration
- No manual APN settings required
- Backup manual installation method available
Connect Instantly
Activate your eSIM and start enjoying high-speed data connectivity immediately upon arrival.
- Instant activation upon arrival
- High-speed 4G/5G networks
- Seamless roaming experience
- Real-time usage tracking
Device Compatibility
Check if your device supports eSIM technology for seamless connectivity
Compatible Devices
Quick Compatibility Check
Go to Settings → Cellular/Mobile Data and look for "Add Cellular Plan" or "Add eSIM"
Requirements
eSIM-compatible device
Device must support eSIM technology (check compatibility list)
Unlocked device
Device must not be carrier-locked to use third-party eSIMs
Internet connection
WiFi needed for initial eSIM download and installation
Important Note
Some carrier-locked devices may not support eSIM from other providers. Contact your carrier if unsure about lock status.
Quick Compatibility Check
Not sure if your device supports eSIM? Here are easy ways to check without looking up device lists
EID Check Method
Check for EID Number
Go to Settings → General → About and look for "EID" or "Digital SIM ID"
Settings Check Method
Look for eSIM Options
Go to Settings → Cellular/Mobile Data → Add Cellular Plan
Critical: Enable Data Roaming
🔴 IMPORTANT: Turn ON Data Roaming for AlwaySim eSIM
Many people turn off data roaming to avoid charges. However, AlwaySim eSIM requires data roaming to be enabled to work properly.
Set AlwaySim as Default Data
✅ Select AlwaySim eSIM for Cellular Data
Make sure to select your AlwaySim eSIM as the default cellular data line to avoid using your primary SIM's data.
Frequently Asked Questions
Everything you need to know about eSIM technology and our service
What is an eSIM and how is it different from a physical SIM?
An eSIM (embedded SIM) is a digital SIM card that's permanently embedded in your device. Unlike traditional physical SIM cards, eSIMs can be programmed remotely to connect to different mobile networks without needing to swap physical cards.
How do I know if my device supports eSIM?
Most modern smartphones released after 2018 support eSIM. Check your device settings under 'Cellular' or 'Mobile Data' to see if you have an 'Add Cellular Plan' option. You can also check our compatibility guide below.
Can I use my regular SIM and eSIM at the same time?
Yes! Most devices support dual SIM functionality, allowing you to keep your home number active while using an eSIM for data abroad. This way you can receive calls and texts on your primary number while using local data rates.
When should I activate my eSIM?
You can install the eSIM profile anytime after purchase, but we recommend activating it only when you arrive at your destination to maximize your plan's validity period. Some plans start immediately upon activation.
What if I need help during my trip?
Our 24/7 customer support team is always available to help you with any connectivity issues or questions about your eSIM plan. We provide support via chat, email, and comprehensive online resources.
What happens if I delete my eSIM by mistake?
Once an eSIM profile is deleted, it cannot be reinstalled with the same QR code. However, most plans allow you to request a replacement eSIM profile. Contact our support team immediately if this happens.
Ready to Experience Global Connectivity?
Join over 750,000 travelers who trust AlwaySim for their global connectivity needs. Experience the perfect blend of security, reliability, and service excellence.