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eSIM Check

Galaxy S21 Series eSIM support

Yes — all 4 models in the Galaxy S21 Series support eSIM. A restriction applies to 1 of the 4 models, detailed below.

Checked against the 4 Galaxy S21 Series entries in our device database. This generation is 5 generations behind the current Galaxy S26 Series, but eSIM support does not expire: an older model that shipped with the hardware keeps it.

Model-by-model breakdown

ModeleSIM Restriction
Galaxy S21Supported—
Galaxy S21+ 5GSupported—
Galaxy S21 Ultra 5GSupported—
Galaxy S21 FE 5GSupportedeSIM on some units only (listed by Three UK; absent from Samsung's own lists) — check Settings

What this means in practice

On Samsung Galaxy, eSIM sits under Settings › Connections › SIM manager › Add eSIM. Two things decide whether it works: the country the phone was made for and the carrier. Samsung's own eSIM lists leave out the Hong Kong and Taiwan versions of models released before 2026, so those units can lack eSIM even though the model name matches. Most Galaxy devices store several profiles and keep one eSIM plus one physical SIM active at the same time.

Check your own device

A model list tells you what the hardware can do. It cannot tell you whether your particular unit is carrier-locked, or whether it is a regional variant sold without eSIM hardware. Run the free check on the phone itself — it reads the eUICC chip directly and answers in a few seconds.

Check my deviceandroidDownload Now

Free on Android, no account needed.

Frequently asked questions

Do all Galaxy S21 Series models support eSIM?expand_more
All 4 models have eSIM in at least one market, but 1 of them not in every regional version: check the Restriction column (eSIM on some units only (listed by Three UK; absent from Samsung's own lists) — check Settings).
Can I use an eSIM and a physical SIM at the same time on the Galaxy S21 Series?expand_more
Yes. Galaxy devices run one eSIM and one physical SIM at the same time, and you choose which line handles calls, texts and data.
How many eSIM profiles can a Galaxy S21 Series model store?expand_more
Most Galaxy models store several profiles — commonly up to five — with one active at a time.
Why does my Galaxy S21 Series model not show the eSIM option?expand_more
Three causes account for almost every case: the unit is a regional variant sold without eSIM hardware, the phone is locked to a carrier that has not provisioned eSIM, or the software is too old. The free check reads the chip directly and tells you which applies.

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