VOXI
eSIMVodafone-owned UK MVNO — hidden UNiDAYS student free first month, 180-day keep-alive
Best for: Budget hunters with a UNiDAYS-verifiable student account who want Vodafone-grade coverage at PAYG keep-alive cost.
Overview
VOXI is Vodafone UK's sub-brand MVNO on Vodafone's network. Pick eSIM directly at checkout; keep-alive works like giffgaff's — any balance change (call, SMS, top-up) extends the number by 180 days, minimum top-up £5. Hidden perk: a student offer verified through UNiDAYS can land the first month free (e.g. 80GB for £10/month with month 1 free; Chinese edu emails have been reported to pass verification; UCAS and promo SIM-pack routes also appear) — cancel before day 30 to drop to PAYG.
VOXI rides Vodafone UK's network (the same coverage and 5G as the parent), which makes it the cheapest clean way onto a top-tier UK network: Pay-as-you-go keep-alive needs any balance change per 180 days, minimum top-up £5, with an SMS warning ~90 days before expiry.
The documented student route: verify student status via UNiDAYS (the old £20-plan-page entry point is stale; UCAS and promo SIM-pack routes also exist) (Chinese edu addresses have been reported to pass — though at least one reviewer's attempt failed, so treat it as environment-sensitive), receive a discount code, apply it so the first month totals £0, choose eSIM, fill in personal details — the birth date you enter doubles as the PDF password protecting the eSIM QR code emailed to you — then bind a payment card and cancel before day 30 to drop to a bare PAYG keep-alive state; any activity in the following 150 days renews the 180-day window. Failed student verification just means paying normal PAYG rates — still low-cost.
Trade-offs shared with all MVNOs: data priority sits below Vodafone's own subscribers, so mainland-China roaming experience can lag the parent network; and the free-month offer is a limited-time promo that may vanish.
Popular plans
| Plan | Data from | Validity | Price |
|---|---|---|---|
| PAYG keep-alive | Pay per use | 180 days per activity (min top-up £5) | From £0 first month via UNiDAYS student offer; standard SIM plans from £10 (45GB; 60GB with the 3x-data promo ending 30/09/2026) |
PAYG terms per VOXI official site (2026-03 review); the UNiDAYS student offer is promotional and unverified for all regions — failures reported.
Pros
- Parent-grade Vodafone coverage and 5G at sub-brand prices
- Same easy 180-day keep-alive as giffgaff
- eSIM chosen at checkout, no CS call needed
- Potential first month free via UNiDAYS student verification
Things to note
- MVNO data priority below Vodafone's own customers
- UNiDAYS free-month route is environment-sensitive and may fail
- Promotional offers can be withdrawn at any time
Key features
- Vodafone UK network quality incl. 5G
- Any balance change per 180 days keeps the number
- eSIM selectable directly at checkout
- Hidden edu-email offer: first month free (regional/env-sensitive)