What it does
Saily offers travel data through an eSIM app, with country, regional and global plan routes. The service can add new destination data to an existing eSIM and separately offers a US phone-number subscription for calls and texts.
Use the data calculator and compatibility guidance before choosing an allowance. The ordinary data selection ranges from small fixed packages to unlimited options, while a regional plan may suit a trip that crosses borders. The app installs the eSIM and the plan is designed to activate at the destination.
Keeping the same Saily eSIM can simplify a later trip because new destination data can be added without installing another profile. Calling is a distinct choice: the advertised US number uses a monthly subscription and requires identity verification in the app after purchase. Do not assume that feature is included in an ordinary data package. Security features and the Ultra global plan also have separate product paths whose terms should be checked for the selected service.
Strengths
- Allows new destination data on an existing eSIM
- Separates ordinary data from the verified US-number subscription
Best for
- Repeat travellers who want to reuse the same installed travel eSIM
Sources
- Get Saily: Affordable eSIM plans for international travel (Oct 26, 2026)
- Get an eSIM with a phone number | Saily (Oct 26, 2026)