eSIM glossary
The terms, explained plainly.
- 5G and eSIM: eSIM & Mobile Connectivity ExplainedLearn how 5G and eSIM work together: faster data abroad, no SIM swap, and one-tap install on iPhone or Android. Plain-English guide for travellers and creators.
- APN Settings for eSIM: eSIM & Mobile Connectivity ExplainedWondering about eSIM APN settings? Learn what an APN is, why most travel eSIMs set it automatically, and what to do if your data won't connect when abroad.
- Carrier Lock & eSIM: eSIM & Mobile Connectivity ExplainedA carrier-locked phone usually can't use a travel eSIM. Learn how to check your lock status, get unlocked and install a Fresim eSIM with one tap on iPhone.
- Data-Only eSIM Plans: eSIM & Mobile Connectivity ExplainedData-only eSIM plans give you mobile data without a phone number, calls or SMS. Learn how they work, what you can and can't do, and how to install in one tap.
- Do eSIMs Have Phone Numbers?: eSIM & Mobile Connectivity ExplainedDo eSIMs have phone numbers? Most travel eSIMs are data-only, so no number. Learn how calls, texts and WhatsApp work abroad, and what a local number needs.
- Dual SIM with eSIM: Two Numbers on One Phone, ExplainedDual SIM with eSIM lets one phone hold a physical SIM and an eSIM at once. See how it works, which phones support it and how travellers use it overseas.
- eSIM for Smartwatches: eSIM & Mobile Connectivity ExplainedSee how eSIM works on Apple Watch and Galaxy Watch, how number sharing differs from a travel data plan, and what to check before you fly abroad. Simple guide.
- eSIM for Tablets & Laptops: eSIM & Mobile Connectivity ExplainedLearn how eSIM works on iPads, Windows laptops and other cellular devices, which models support it, and how to stay connected abroad without hunting for a SIM.
- eSIM Not Working? Troubleshooting Guide: eSIM & Mobile Connectivity ExplainedeSIM not working? Fix no service, activation failed and no data with simple steps: check settings, roaming, APN and install status before you contact support.
- eSIM Profile Management: eSIM & Mobile Connectivity ExplainedLearn how eSIM profile management works: downloading, storing, switching and deleting profiles on your phone, and what it means for your next trip abroad.
- eSIM vs Physical SIM Card: eSIM & Mobile Connectivity ExplainedeSIM vs physical SIM: how they differ, which suits travel, and how a one-tap install gets you online abroad without swapping cards or hunting for a shop.
- eSIM-Only iPhone: eSIM & Mobile Connectivity ExplainedAn eSIM-only iPhone has no SIM tray. Learn which models work this way, how to travel with one, and how to install a travel eSIM in one tap before you fly.
- Fair Usage Policy (FUP) on eSIM Plans: eSIM & Mobile Connectivity ExplainedFair usage policy (FUP) explained: what the limit on unlimited eSIM data means, when speeds slow down, and how to pick a plan that fits your trip abroad.
- Google Pixel eSIM Support and Setup: eSIM & Mobile Connectivity ExplainedWhich Google Pixels support eSIM, how to add one under Settings > Network & internet > SIMs, and what to check before you travel. A plain-English guide.
- Hotspot & Tethering with eSIM: eSIM & Mobile Connectivity ExplainedLearn how hotspot and tethering work with an eSIM, how to share your data with a laptop or friends, and what to check on your plan before you travel abroad.
- How to Set Up eSIM on Android: eSIM & Mobile Connectivity ExplainedSet up an eSIM on Android in minutes: tap Install on Android from your email, or scan a QR code from another screen. Works on Android 10+ with a eSIM phone.
- How to Set Up eSIM on iPhone: eSIM & Mobile Connectivity ExplainedLearn how to set up an eSIM on iPhone in minutes: tap Install on iPhone in your email, check iOS 17.4+, and turn on data roaming. A simple guide for travellers.
- How to Transfer an eSIM to a New Phone (iPhone and Android)Learn how to transfer an eSIM to a new iPhone or Android phone, which transfer methods exist, and what to do when a travel eSIM will not move to a new phone.
- IMEI Number & eSIM Compatibility: eSIM & Mobile Connectivity ExplainedYour IMEI identifies your phone, while the EID identifies its eSIM chip. Learn how to check both, why they matter for eSIM compatibility, and how to install.
- iPhone 17 and eSIM: eSIM & Mobile Connectivity ExplainedTravelling with an iPhone 17? Learn how its eSIM works, how to install a travel plan with one tap, and what to check before you fly. Plain-English guide.
- Is eSIM Secure? Security Explained: eSIM & Mobile Connectivity ExplainedIs eSIM secure? Learn how encryption, remote provisioning and SIM swap risks work, plus simple safety steps to keep your travel data safe abroad with Fresim.
- Local vs Global eSIM Plans: eSIM & Mobile Connectivity ExplainedLocal, regional and global eSIM plans compared: how coverage, data and cost differ, and which suits your trip. Plans install in one tap on iPhone or Android.
- QR Code eSIM Activation: eSIM & Mobile Connectivity ExplainedQR code eSIM activation explained: how it works, how fast it arrives by email, how to back it up, and why one-tap install is the easier route for travellers.
- Samsung Galaxy eSIM Support and Setup: eSIM & Mobile Connectivity ExplainedCheck if your Samsung Galaxy supports eSIM, then install with one tap or QR code via Settings > Connections > SIM manager. See locked and regional models.
- Using a VPN with eSIM: eSIM & Mobile Connectivity ExplainedA VPN encrypts your traffic on any eSIM connection. Learn how they work together abroad, what a VPN can't do, and how to stay private on public Wi-Fi and data.
- What Is a Multi-IMSI SIM? How Multi-Network eSIMs WorkMulti-IMSI SIMs hold several network identities and switch between them abroad. Learn how multi-network eSIMs work, their limits, and what you should know.
- What Is an eSIM?: eSIM & Mobile Connectivity ExplainedAn eSIM is a digital SIM built into your phone. Learn how it works, which phones support it and how travellers install one with one tap in minutes on arrival.
- What Is an MFF2 SIM? Embedded (Soldered) SIMs ExplainedMFF2 is the tiny soldered SIM chip built into IoT devices, cars and trackers. Learn how it differs from the eSIM on your phone and what it means for travel.
- What Is Data Roaming? Meaning, Charges and How to Avoid ThemData roaming lets your phone use mobile data on a foreign network. See what it means, why charges add up and how an eSIM with one-tap install beats bill shock.
- What Is eUICC? The eSIM Chip Explained (eUICC vs eSIM)eUICC is the tiny chip inside your phone that stores eSIM profiles. Learn how it differs from an eSIM, why it matters abroad, and how one-tap install works.
- Which Phones Support eSIM?: eSIM & Mobile Connectivity ExplainedWhich phones support eSIM? iPhone XS and newer, Pixel 3 and newer, and many Samsung Galaxy models do. See how to check yours before you travel overseas.
- WiFi Calling with eSIM: eSIM & Mobile Connectivity ExplainedWiFi calling with eSIM lets you make calls and send texts over WiFi abroad using your home number. Learn how VoWiFi works, what you need and how to set it up.