Galaxy S21 Ultra 5G eSIM Compatibility
Yes. The Galaxy S21 Ultra 5G (released 2021) supports 1 active eSIM alongside a physical SIM slot, and works with travel eSIMs out of the box.
Galaxy S21 Ultra 5G eSIM Specs
| eSIM support | Yes |
|---|---|
| Active eSIM profiles | 1 |
| Physical SIM slot | Yes |
| Dual SIM Dual Standby | Yes |
| Release year | 2021 |
| Brand | Samsung |
Source: manufacturer spec pages, last verified 2026-04-12.
How to install an eSIM on this device (Samsung One UI)
- 1Open Settings → Connections → SIM manager → Add eSIM.
- 2Tap “Scan QR code” and scan the code from your MyeSIM order email.
- 3Confirm the download, then choose which SIM handles mobile data.
- 4Enable Data Roaming for the travel eSIM line when you arrive.
Frequently Asked Questions
Does the Galaxy S21 Ultra 5G support eSIM?
Yes. The Galaxy S21 Ultra 5G (2021) supports eSIM.
Can I use a physical SIM and an eSIM together on the Galaxy S21 Ultra 5G?
Yes. The Galaxy S21 Ultra 5G supports Dual SIM Dual Standby: keep your home SIM in the physical slot for calls and texts, and use a travel eSIM for local data abroad.
Can I use a travel eSIM on the Galaxy S21 Ultra 5G abroad?
Yes. Buy a plan for your destination, scan the QR code to install before you fly, and turn it on when you land — no SIM swap, no roaming fees from your home carrier. Make sure the device is carrier-unlocked.
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