Is the Xiaomi Xiaomi 15T eSIM compatible?

Yes. The Xiaomi Xiaomi 15T (2025) supports eSIM in its UK version.

Verified against the manufacturer and UK carrier sources. Data last updated 2026-07-23.

The detail and the caveats

UK model; mi.com UK spec lists nano-SIM plus eSIM.

Xiaomi pattern: Xiaomi flagships have eSIM on global/UK ROMs from the 12T Pro (2022) onward, with the notable exception of the 14 Ultra, which has no eSIM anywhere. Devices on Chinese ROMs never support eSIM. Most Redmi and POCO phones have no eSIM; exceptions are the Redmi Note 13 Pro+ 5G and Note 14 Pro / Pro+ 5G global models.

Dual eSIM: no, the Xiaomi 15T runs one active eSIM at a time (usually alongside the physical SIM).

Verify your exact unit in 10 seconds

Model level answers have limits, especially with grey imports and regional variants. To test the actual Xiaomi 15T in your hand:

  1. Open the dialler and dial *#06#.
  2. Look for an EID: a 32 digit number shown alongside the IMEI.
  3. EID present = the phone has eSIM hardware. No EID = no eSIM.

You can also check Settings > About phone for an EID entry.

A separate question

Is the Xiaomi 15T supported on the ONSIM network? No

Whether a phone has eSIM and whether it works on a specific network are different questions. The Xiaomi Xiaomi 15T is not on the ONSIM supported device list, so it will not work on the ONSIM network even if the handset itself supports eSIM. ONSIM is explicit that unlisted devices will not work and it is unable to troubleshoot them. A Virtual Landline (which diverts calls to the phone you already have, on any network) works with every phone.

Check another phone ONSIM supported devices → Landline SIM →

Xiaomi Xiaomi 15T eSIM questions

Does the Xiaomi Xiaomi 15T support eSIM?

Yes. The Xiaomi Xiaomi 15T (2025) supports eSIM in its UK version. UK model; mi.com UK spec lists nano-SIM plus eSIM.

How do I check if my Xiaomi Xiaomi 15T has eSIM?

Dial *#06# on the Xiaomi 15T. If an EID (a 32 digit number) appears alongside the IMEI, your unit has eSIM hardware; no EID means no eSIM. You can also open Settings > About phone and look for an EID entry. This checks your exact handset, which matters for grey imports and regional variants.

Can I use two eSIMs at once on the Xiaomi Xiaomi 15T?

No. The Xiaomi 15T supports eSIM, but only one active eSIM at a time. You can still run two lines by pairing the eSIM with a physical SIM in the tray.

Does the Xiaomi Xiaomi 15T work with ONSIM?

No. The Xiaomi Xiaomi 15T is not on the ONSIM supported device list, so it will not work on the ONSIM network even if the handset itself supports eSIM. ONSIM is explicit that unlisted devices will not work and it is unable to troubleshoot them. A Virtual Landline (which diverts calls to the phone you already have, on any network) works with every phone. See the supported devices page for what is covered.

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