Is the Fairphone Fairphone (Gen 6) eSIM compatible?

Yes. The Fairphone Fairphone (Gen 6) (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

Nano-SIM plus eSIM, with a separate microSD slot.

Fairphone pattern: Every Fairphone from the Fairphone 4 (2021) onward has one nano-SIM slot plus one eSIM with dual SIM standby.

Dual eSIM: no, the Fairphone (Gen 6) 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 Fairphone (Gen 6) 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 Fairphone (Gen 6) supported on the ONSIM network? No

Whether a phone has eSIM and whether it works on a specific network are different questions. The Fairphone Fairphone (Gen 6) 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 →

Fairphone Fairphone (Gen 6) eSIM questions

Does the Fairphone Fairphone (Gen 6) support eSIM?

Yes. The Fairphone Fairphone (Gen 6) (2025) supports eSIM in its UK version. Nano-SIM plus eSIM, with a separate microSD slot.

How do I check if my Fairphone Fairphone (Gen 6) has eSIM?

Dial *#06# on the Fairphone (Gen 6). 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 Fairphone Fairphone (Gen 6)?

No. The Fairphone (Gen 6) 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 Fairphone Fairphone (Gen 6) work with ONSIM?

No. The Fairphone Fairphone (Gen 6) 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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