Fonix casinos UK 2026: complete list of UKGC operators accepting Fonix Mobile deposits

By Jack Carter, Editor, paybyphonecasino.co.uk. Every operator is checked against the UKGC public register; last check 29 May 2026.

Fonix Mobile plc is a UK direct-carrier-billing payment service provider listed on the London Stock Exchange under ticker FNX. At UKGC-licensed online casinos, Fonix posts your deposit to your mobile phone bill or pay-as-you-go balance instead of a card or bank account. Two operators verify Fonix integration in May 2026: MrQ Casino (Tek Fox Ltd, UKGC account 60629) and Hot Streak Casino (Grace Media (Gibraltar) Limited, UKGC account 57869).

And by operator-integration count, Fonix is now the more important UK carrier-billing PSP. Fonix carries two UKGC integrations. Boku carries one, Casushi. Siru Mobile carries one, Mr Vegas. So the old Boku-dominant story no longer fits the May 2026 landscape, and the shift tracks straight back to the April 2026 Remote Gaming Duty doubling. This page covers the deposit mechanics, the EE, O2, Vodafone, and Three carrier matrix, the Fonix-vs-Boku 2026 comparison, the withdrawal constraint, and the post-RGD reframing. It sits one level down from our pay-by-mobile casino UK 2026 hub.

What is Fonix Mobile

Fonix Mobile plc is a London-Stock-Exchange-listed payment company trading under the ticker FNX, admitted to the exchange in October 2020 and founded in 2006, per its corporate About page and the LSE listing. It's incorporated in England under Companies House number 05836806, and it calls itself the UK's largest SMS and carrier-billing mobile aggregator.

Fonix is a mobile-payments aggregator first, and a gambling-payments enabler second. Its product line spans a Payments API, fPay, Checkout, and Campaign Manager, and UK casino deposits sit inside the Payments API and its carrier-billing rail. The wider business reaches across media, charity, and digital services, from TV and radio competitions to charity SMS donations and OTT subscriptions, as its homepage sets out. Gambling is one slice of a much bigger UK payment-infrastructure company.

Two regulators sit over a Fonix-funded casino deposit, at two separate layers. At the carrier-billing layer, Fonix answers to the Phone-paid Services Authority, the UK statutory body for phone-paid services. At the casino layer, the operators Fonix serves are licensed by the UK Gambling Commission. So Fonix is one of two mainstream UK carrier-billing PSPs alongside Boku, and both clear deposits through the same direct carrier billing method.

That method carries a hard ceiling. The exact daily figures are confirmed in the deposit-mechanics section below.

Best Fonix casinos UK 2026 (MrQ + Hot Streak Casino reviewed)

Two UKGC-licensed operators have publicly verifiable Fonix Mobile integration in 2026: MrQ Casino (Tek Fox Ltd, UKGC account 60629) and Hot Streak Casino (Grace Media (Gibraltar) Limited, UKGC account 57869). Both take Fonix-billed deposits at a £10 minimum. And both survived the April 2026 Remote Gaming Duty rise that thinned the wider UK operator pool.

We build this list one way. First, we confirm the licensee and account number on the UKGC public register. Then we check that the operator demonstrably takes Fonix today, either at the live cashier or through a current public-source listing.

A casino only appears here if both checks pass.

MrQ Casino, Fonix integration

MrQ Casino is operated by Tek Fox Ltd, registered with the UK Gambling Commission under account 60629, and you'll find that confirmed on the operator's homepage footer and the UKGC public register entry. talkSPORT's May 2026 Fonix casinos listicle reports MrQ as Fonix-accepting alongside a no-wagering welcome bonus.

The minimum Fonix deposit is £10. The known welcome offer is 200 cash spins with no wagering on the code POTS200, again per talkSPORT. That no-wagering structure is unusual, and it's genuinely player-friendly, because the winnings from those spins aren't locked behind a playthrough multiplier. MrQ pioneered the no-wagering UK bonus structure, and the Fonix integration fits that minimum-friction posture: three taps from cashier to confirmed credit. Just confirm the code is still live, and that the offer qualifies on a Fonix-funded deposit, before you commit. Our pay-by-phone casino bonuses guide carries the wider picture.

Hot Streak Casino, Fonix integration

Hot Streak Casino is operated by Grace Media (Gibraltar) Limited of Sovereign Place, 117 Main Street, Gibraltar, under UKGC account 57869, confirmed on the operator's homepage footer and the UKGC public register entry. Its homepage payment strip surfaces Visa, Mastercard, PayPal, Trustly, and Google Pay, but not Fonix, because the Fonix option sits behind the authenticated cashier.

So we hedge the Fonix claim, and we'll say exactly how. Per the OLBG May 2026 pay-by-phone-casinos public listing, Hot Streak Casino takes Fonix Mobile deposits at a £10 minimum, and those deposits are eligible for promotions. The UKGC licence is primary-source confirmed. The Fonix integration rests on that public-source bridge until a logged-in cashier check confirms it. Hot Streak Casino is a slots-led brand in the Grace Media UK network, and Fonix fits the casual-deposit profile that carrier billing funnels. Read any welcome offer at the cashier before you deposit.

How Fonix payments work at UK casinos

A Fonix Mobile deposit at a UK casino settles as a direct carrier-billed transaction. You enter your mobile number at the cashier, Fonix sends an SMS PIN, you confirm the PIN, and the deposit posts to your casino balance in under 30 seconds, per the Fonix Payments API documentation. The charge then appears on your next mobile bill, or comes off your pay-as-you-go credit straight away.

The full flow runs in five steps.

1. Open the cashier and select Pay by Mobile or Fonix.
2. Enter your UK mobile number.
3. Confirm the deposit via the SMS PIN Fonix sends.
4. Watch the deposit land in your casino balance, typically in under 30 seconds.
5. See the charge hit your next monthly bill, or your pay-as-you-go balance debited there and then.

A Fonix-billed casino deposit sits inside a UK carrier-set daily cap. Most UKGC operators report that cap at £30 per consumer per day, while fruityslots's May 2026 Fonix audit reports £40 daily at certain Fonix-integrated operators, a split the OLBG pay-by-phone-casinos listing also records. But the figure is set at the MNO and PSP contract layer, not by Fonix universally, so pin it to the specific operator's terms rather than assuming one number. The monthly aggregate cap is £240, and it applies across every Fonix-billed gambling merchant. Open a second Fonix-funded casino, and you don't unlock a second daily allowance. Operator-side minimums of £10 at MrQ and Hot Streak Casino stack on top of those carrier caps.

The cap matters for one reason beyond budgeting. The carrier-set Fonix daily ceiling predates the 31 October 2025 UKGC mandatory deposit-limit prompt by more than a decade. A Fonix-funded UK casino account has carried a hard per-day ceiling at the rails layer for years. So the October 2025 mandate didn't bring Fonix into compliance. It brought card and bank-transfer rails up to a standard Fonix already enforced. Read that way, the Fonix carrier-cap is a built-in UKGC deposit limit. And every Fonix-funded deposit at a UKGC operator is GamStop-bound, so a self-excluded player can't deposit by Fonix at all. For the full deposit-and-withdraw-from-a-pay-by-phone-casino walkthrough, see the dedicated explainer.

Mobile networks supported by Fonix

Fonix Mobile supports all four UK mobile network operators on contract: EE, O2, Vodafone, and Three, per the Fonix Payments API documentation. Pay-as-you-go support is patchier. EE and Vodafone report the broadest PAYG compatibility per the fruityslots May 2026 Fonix audit, while Three and O2 PAYG can be limited by account age and payment history. MVNO support is operator-specific, and thinner than the four MNOs.

A mobile network operator (MNO) owns its own network. A mobile virtual network operator (MVNO) rides on one. On contract, EE, O2, Vodafone, and Three each clear a Fonix casino deposit against your monthly bill with no extra app. On pay-as-you-go, your balance has to cover the deposit at the moment you make it, because Fonix doesn't extend credit. Contract customers see the charge on the next bill, with no funds-on-hand requirement at the deposit moment.

The SMS PIN is the carrier-side authentication point, and it works the same on every network. If that SMS doesn't arrive, the deposit won't clear, whatever your carrier. And MVNO acceptance varies by operator, so for the operator-by-operator grid, see the full Fonix carrier compatibility matrix.

Sky Mobile deserves its own note. It's a Boku-historical issue: Sky Mobile suspended Boku gambling carrier-billing in early 2025, then later restored it. Fonix's Sky Mobile compatibility is operator-specific, so check the Sky Mobile pay-by-phone casino status page before you assume it works.

Fonix vs Boku, which is better for UK casino deposits in 2026

Fonix Mobile plc and Boku, Inc. are separate UK carrier-billing payment service providers, not interchangeable rails. The 2026 UK pay-by-phone casino landscape inverted after the April 2026 RGD doubling: Fonix carries two verifiable UKGC-licensed integrations (MrQ and Hot Streak Casino), Boku carries one (Casushi). So the decision rule for players is no longer "default to Boku." It's "use the PSP your preferred UKGC operator offers."

The two PSPs hold different UK regulatory anchors. Fonix Mobile plc is LSE-listed (FNX) and PSA-regulated at the carrier-billing layer. Boku's regulated arm is Boku Account Services UK Limited, FCA-authorised as an Electronic Money Institution under FRN 900030. A related entity, Boku Network Services UK Limited (Companies House 05044979), handles trading and integration, but it isn't the FCA-authorised arm, so any regulatory claim points to Account Services. Both PSPs sit under the PSA at the carrier layer. Only Boku Account Services holds an FCA EMI authorisation.

Here's how the two compare on the attributes that matter.

The per-PSP operator footprint is the real differentiator. Fonix is at MrQ and Hot Streak Casino, as the talkSPORT listicle records. Boku is at Casushi, operated by Solaya Group Limited under UKGC account 100050. Siru Mobile, a third active UK carrier-billing PSP, sits at one UKGC operator, Mr Vegas, at a roughly £5 minimum. One older brand, Payforit, was the UK MNO-collective carrier-billing brand. It wound down by 2024, and no UK casino actively integrates it under that name in 2026.

So the choice isn't really yours to make at the cashier. The operator picks the PSP. You pick the operator. There's no within-PSP free choice once you're on a casino's banking page, which is why a side-by-side PSP comparison is worth reading before you register anywhere.

Fonix withdrawal limitations

Fonix Mobile-funded deposits can't be withdrawn to a phone bill. Carrier billing is a one-way settlement rail under UK Gambling Commission anti-money-laundering rules and the Payment Services Regulations 2017. UK casino withdrawals from Fonix-funded balances route to a registered debit card, bank account, or e-wallet instead.

The answer is no, and it's structural rather than commercial. Anti-money-laundering (AML) rules at the UKGC require a withdrawal route that supports source-of-funds verification, and a mobile carrier can't provide one. On top of that, the carrier itself has no mechanism to credit a bill. The rails only run merchant to carrier to consumer-bill, never the reverse, as the direct carrier billing definition makes clear.

So withdrawals route through a standard method. A registered debit card clears in one to three days, a bank transfer in one to five, and an e-wallet is often same-day. Most UKGC operators want at least one verified non-Fonix withdrawal route on the account before they'll process anything, so set one up before your first deposit. And Fonix isn't unique here. Boku and Siru Mobile share the constraint, and the one-way design is arguably a feature, not a bug: a self-excluded player, or one who's lost a phone, can't have winnings routed to a compromised account. For the full mechanics, see Fonix deposit and withdrawal mechanics explained.

Why Fonix is the dominant PSP at UK pay-by-phone casinos in 2026

Fonix Mobile is, by operator-integration count, the more important UK pay-by-phone-casino PSP in 2026. Two UKGC-licensed operators publicly take Fonix (MrQ and Hot Streak Casino). One publicly takes Boku (Casushi). The reversal of the old Boku-dominant narrative tracks straight to the April 2026 Remote Gaming Duty doubling and the consolidation it forced.

The historical picture, pre-2026, had Boku as the dominant UK carrier-billing PSP and Fonix as the secondary option. At the operator-integration-count layer, that picture has flipped. And the cause is cost. The April 2026 Remote Gaming Duty doubling lifted the rate from 21% to 40%, which raised the per-deposit cost burden on UK operators, per the HMRC gambling duty changes. Operators reviewed their PSP integrations as part of cost reduction, and pay-by-mobile, which serves a small share of total deposits but needs an active commercial integration, landed on the candidate list at thin-margin brands. A BetterGambling study from October 2025 projected more than 800 UK operators closing by 2027 under that cumulative cost pressure.

So the effect played out fast. Boku integrations contracted faster than Fonix integrations through 2025 and 2026. Boku's confirmed UKGC footprint at May 2026 is Casushi, a single brand. Fonix's confirmed footprint is MrQ and Hot Streak Casino. Mr Vegas separately integrates Siru Mobile. The RGD impact, plus operator-side decisions, produced the inversion. This isn't Boku failing as a provider. It's operator-side cost arithmetic.

There's a regulatory tailwind too. The 31 October 2025 UKGC mandatory deposit-limit prompt made the per-day per-consumer ceiling that Fonix deposits have always carried the regulator's expectation for every payment method. Cards and bank transfers had to be brought up to a standard Fonix already enforced at the rails. The result in 2026: a Fonix-billed deposit arrives at the operator already past the regulator's deposit-limit requirement. The rails do the work. We keep this list current as of May 2026 and review it quarterly.

Frequently asked questions

What is Fonix Mobile?

Fonix Mobile plc is a UK direct-carrier-billing payment service provider listed on the London Stock Exchange under ticker FNX. It posts your casino deposit to your mobile phone bill or pay-as-you-go balance instead of a card or bank account.

Which UK casinos accept Fonix deposits?

Two UKGC-licensed operators verify Fonix integration in May 2026: MrQ Casino (Tek Fox Ltd, UKGC account 60629) and Hot Streak Casino (Grace Media (Gibraltar) Limited, UKGC account 57869). talkSPORT's Fonix listicle also names Duelz and Pub Casino, so verify those at the cashier before depositing.

What is the minimum Fonix deposit at a UK casino?

It's £10 at MrQ Casino and Hot Streak Casino. The minimum is operator-set, not Fonix-set, so other Fonix-integrated brands can set £5 or £20 depending on their banking terms.

Can I withdraw winnings to Fonix?

No. Carrier billing is a one-way settlement rail under UKGC anti-money-laundering rules and the Payment Services Regulations 2017. Withdrawals route to a registered debit card, bank account, or e-wallet instead.

Is Fonix Mobile listed on the stock market?

Yes. Fonix Mobile plc is listed on the London Stock Exchange under ticker FNX. The company was admitted to the LSE in October 2020, and it was founded in 2006.

Is Fonix safer than Boku at UK casinos?

Both are equally safe inside UKGC-licensed operators, because safety comes from the operator's UKGC licence, not the carrier-billing rail. Fonix answers to the Phone-paid Services Authority at the carrier layer, and Boku Account Services UK Limited is FCA-authorised as an Electronic Money Institution under FRN 900030. Different anchors, equivalent player protection.

Which UK mobile networks support Fonix?

EE, O2, Vodafone, and Three on contract. MVNO support varies by operator and account type, and pay-as-you-go support is broader on EE and Vodafone than on Three or O2 per the fruityslots May 2026 Fonix audit.

What is the Fonix daily deposit limit at UK casinos?

It's carrier-set and operator-pinned. Most UKGC operators report £30 per consumer per day, while the fruityslots May 2026 Fonix audit reports £40 daily at some operators, with a £240 monthly aggregate cap. Pin the figure to the operator's published terms.

Why do more UK casinos use Fonix than Boku in 2026?

Per the May 2026 UKGC operator landscape, Fonix carries two publicly verified UKGC integrations (MrQ and Hot Streak Casino), and Boku carries one (Casushi). The reversal followed the April 2026 Remote Gaming Duty doubling and the operator consolidation it forced.

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