VOXI SIM Only Deals

VOXI is Vodafone‘s own SIM-only sub-brand, built to offer the same network coverage at a lower price point and without long-term contracts. Following Vodafone’s acquisition of Three UK, VOXI now runs on what is the UK’s largest combined mobile network — meaning if a phone previously picked up Three signal, it picks up the same signal today. VOXI SIM only deals start at £12 a month for 75GB of data on a rolling 30-day plan, and every plan includes Endless Data for social media and music apps, so Instagram, WhatsApp, Spotify, and over a dozen other apps never count against your allowance. With no annual contract and eSIM support, VOXI is one of the most straightforward flexible SIM options for anyone still paying over the odds on an outdated deal.

What VOXI Offers UK SIM Shoppers

Plans and Pricing

VOXI runs two rolling 30-day plans. The entry plan is £12 per month, which includes 75GB of general data alongside Endless Social Media and Endless Music. The higher plan costs £20 per month and includes 300GB of general data plus Endless Social Media, Endless Music, and Endless Video.

Both plans ship with a free physical SIM or eSIM — your choice at checkout. There’s no upfront payment, no annual commitment, and no exit fee. Cancel or switch plans with 30 days’ notice at any point. BudgetFitter maintains the current verified VOXI deal in the section above — always check there before signing up directly to confirm the offer is active.

eSIM activation means no waiting for a physical card: the SIM is installed directly on a compatible handset within minutes. For anyone switching networks mid-month or picking up a second line for travel, this removes the usual friction entirely. If you’re comparing eSIM providers more broadly, BudgetFitter’s top picks for eSIMs covers the main options.

Endless Data — Which Apps Are Truly Unlimited

Endless Data is VOXI’s term for its zero-rated app categories. Apps within these categories do not draw from your monthly general data allowance — they can be used freely without affecting the gigabyte balance.

Social media on both plans: Instagram, Snapchat, WhatsApp, Facebook, Twitter/X, Pinterest, Facebook Messenger. Music streaming on both plans: Spotify, Apple Music, Amazon Music, Deezer, TIDAL, Rayo, Primordial Radio. Video streaming on the £20 plan only: YouTube, Netflix, Prime Video, My5.

A few practical caveats. Third-party adverts displayed inside any of these apps do consume general data — unavoidable in practice, though typically minor. Tethering is fully supported, and Endless Data extends to hotspot-connected devices. If you’re sharing a connection with a laptop or tablet, your social and streaming apps still run free of charge on the tethered device.

One note for VPN users: when a VPN is active, VOXI cannot identify which app is generating traffic, so all data is counted against your general allowance rather than the Endless pool. Disabling the VPN while using Endless Data apps restores zero-rating.

Roaming within Europe requires a separate add-on pass. Once active, Endless Data categories remain available, but a combined 20GB fair-use limit applies across all Endless Data use during the 30-day period.

VOXI vs giffgaff, SMARTY, and iD Mobile

The flexible SIM market in the UK is crowded, but VOXI’s network position and Endless Data set it apart from most rivals. Because VOXI is Vodafone’s own sub-brand — and Vodafone now owns Three — it runs on the UK’s largest combined mobile infrastructure. BudgetFitter has covered this angle in depth: why VOXI is the smart dupe for Vodafone users.

giffgaff runs on O2 and offers a similarly commitment-free monthly model, but there is no equivalent to Endless Data — every app draws from the same pot. For anyone spending several hours a day on social media or streaming music, VOXI’s zero-rating stretches the practical value of a plan considerably further than raw gigabyte comparisons suggest.

SMARTY Mobile runs on Three’s network and gives unused data as a bill credit at the end of each month — a different model that suits lighter users who want a rebate for restraint. With Vodafone’s acquisition of Three now complete, both SMARTY and VOXI effectively share the same underlying network infrastructure, making Endless Data the clearest differentiator between the two.

iD Mobile also runs on Three and includes data rollover, carrying unused allowance forward month to month. The same logic applies: the network gap between iD Mobile and VOXI has closed since the merger, so the choice now comes down to rollover versus Endless Data. Asda Mobile uses Vodafone’s infrastructure but offers neither Endless Data nor rollover, making it the weaker pick for data-heavy users.

VOXI Drop and Referral Extras

VOXI customers automatically gain access to VOXI Drop, a monthly freebies programme that offers retail partner rewards to active subscribers. Items rotate each month and have included confectionery, skincare products, and discounted cinema tickets in past editions. No additional spend is required; the reward is claimed directly in the VOXI app.

The referral scheme adds another layer: refer a friend and both accounts receive gift cards — redeemable with Amazon, PayPal, or Just Eat — worth up to £20 each, provided the referred customer stays on VOXI for two billing months. For existing customers with an active social circle, this lowers the effective monthly cost over time without requiring any change in usage habits.

For anyone evaluating VOXI: the combination of the UK’s largest mobile network, rolling 30-day flexibility, and Endless Data for the apps most people actually use makes a strong case at £12 to £20 a month. BudgetFitter verifies the current VOXI offer and updates this page whenever it changes — the deal in the section above reflects the latest available option.