myFirst Fone S3+ eSIM: FreeSIM Setup and Compatibility

The myFirst Fone S3+ contains an embedded eSIM and is designed to use myFirst's own FreeSIM service. It is not a general-purpose smartwatch that accepts any travel eSIM QR code.

The official user manual states that third-party eSIMs cannot be used. Parents should activate the bundled service through the myFirst Circle app and follow the region-specific subscription and setup instructions.

What eSIM works with the myFirst Fone S3+?

Use the official myFirst FreeSIM supplied for the watch. The eSIM is embedded, so there is no physical card to insert and no menu for importing an unrelated carrier profile.

Install the myFirst Circle parent app
Create or sign in to the parent account
Pair the watch using the official onboarding flow
Choose the available FreeSIM subscription for the supported region

Why a travel eSIM QR code will not work

The watch's embedded eSIM implementation is tied to myFirst service. The official manual explicitly says third-party eSIMs cannot be used, so purchasing a phone travel-eSIM plan for this watch would not make it connect.

Troubleshooting connectivity

Check that the watch is supported in the country, the FreeSIM subscription is active, the parent app is current, and the watch has been restarted after setup. For activation or coverage errors, use myFirst support rather than repeatedly resetting or deleting the watch profile.

How this guide was prepared

We compare the factors a traveler can verify before purchase: destination coverage, data allowance, validity, plan type, device compatibility, installation requirements, and the current catalog price. Network and device claims are checked against official sources where available. We do not describe a plan as independently lab-tested unless the article includes a documented test method and results.

Frequently asked questions

Can I install an eSIM from another carrier on myFirst Fone S3+?

No. The official user manual says third-party eSIMs cannot be used; the watch uses the embedded myFirst FreeSIM service.

Does the myFirst Fone S3+ need a physical SIM?

No. The supported cellular service uses the watch's embedded eSIM.

Can I buy an eSIMFlux plan for the watch?

No. eSIMFlux phone travel profiles are not compatible with the myFirst Fone S3+ proprietary embedded-SIM setup.

Editorial disclosure: myFirst is a third-party brand. eSIMFlux travel eSIMs are not compatible with the proprietary myFirst Fone S3+ embedded-SIM service.