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Fuse
Nothing · 2025

Nothing Phone (3a) eSIM Setup

eSIM supported — works with Fuse

Install Fuse Mobile on your Nothing Phone (3a) in under five minutes. No SIM swap, no shop visit — scan a QR code and you're connected to the strongest of four UK networks.

Platform

Android

Released

2025

Min OS for eSIM

Android 15 (Nothing OS 3.1)

Set up Fuse on your Phone (3a)

The whole process takes 2–3 minutes from the moment your activation email arrives.

  1. 1

    Open eSIM settings

    On your Phone (3a), go to Settings → Network & internet → SIMs → Add eSIM.

  2. 2

    Tap "Scan QR code"

    Point the camera at the Fuse activation QR from your welcome email.

  3. 3

    Download the profile

    Confirm when prompted — Android will fetch the Fuse profile from our provisioning server. Takes 30–60 seconds.

  4. 4

    Name the line "Fuse"

    Label the line so it's easy to identify alongside any other SIM you have. Pick Fuse as your default data line.

  5. 5

    Enable Data Roaming for travel

    In the Fuse line settings, turn Data Roaming on. Fuse plans include data in 130+ countries — this needs to be enabled.

Other Nothing devices

Yes. The Nothing Phone (3a) (released 2025) supports eSIM from Android 15 (Nothing OS 3.1) onwards. You can install your Fuse eSIM in under five minutes — no SIM swap, no shop visit.
After ordering, you'll get an email with a QR code. On your Nothing device, go to Settings → Network & internet → SIMs and choose "Add eSIM", then follow the prompts. The full setup takes 2–3 minutes.
Yes — the Phone (3a) supports dual SIM (one physical + one eSIM, or two eSIMs). Keep your existing line for calls and SMS, and use Fuse for data. You decide which line carries data in Settings.

Ready on your Phone (3a)?

One eSIM.
Every UK network.

Auto-switches to the strongest signal. Plans from £5.99/mo. Set up in five minutes.

See plans from £5.99Check coverage

No contract. Cancel anytime.