Pay by mobile casino UK 2026: UKGC-licensed casinos accepting Boku and Fonix deposits

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

A pay-by-mobile casino is a UKGC-licensed online casino that takes deposits charged to your mobile bill or pay-as-you-go credit through Boku or Fonix Mobile. UK carrier-billing rules cap deposits at £30 per day and £240 per month, and the method is deposit-only, so withdrawals route back through bank transfer, debit card, or e-wallet.

This page ranks the four UKGC-licensed operators that still take a pay-by-phone deposit in 2026: Casushi on Boku, MrQ and Hot Streak Casino on Fonix, and Mr Vegas on Siru Mobile. Each card carries a public-register citation you can check yourself. And we're honest about the operators that recently dropped Boku, because most affiliate sites still list them as live. Below the rankings you'll find how the Boku and Fonix mechanics work, which UK carriers clear a deposit, where the £5 and £10 minimums sit, and why the £30 daily Boku cap reads as a built-in deposit limit, a framing the 31 October 2025 UKGC deposit-limit prompt mandate made standard across the market. Siru Mobile is named here as the niche third PSP, sitting under the wider direct carrier billing category rather than as a separate payment brand.

What is a pay-by-mobile casino

A pay-by-mobile casino is a UKGC-licensed online casino that takes deposits charged to your mobile bill or pay-as-you-go credit through Boku or Fonix Mobile. UK carrier-billing rules cap deposits at £30 per day and £240 per month, and the method is deposit-only, so withdrawals route back through bank transfer, debit card, or e-wallet.

Every legal pay-by-phone casino in the UK holds a remote casino licence from the UK Gambling Commission, and you can confirm any operator's status on the public register. The payment side runs through a regulated provider. Boku is the primary one: its FCA-authorised arm, Boku Account Services UK Limited (FRN 900030), is the Electronic Money Institution that clears carrier-billed casino deposits. Fonix Mobile plc, listed on the London Stock Exchange under FNX, is the secondary provider. And Siru Mobile is the niche third option, a Finnish direct carrier billing provider that sits inside the same direct carrier billing category.

The cap depends on the provider. Boku deposits are limited to £30 a day and £240 a month, with an £8 ceiling on the first transaction. Fonix and Siru carrier billing sit under a slightly higher £40 daily ceiling, set under Phone-paid Services Authority rules, with the same £240 monthly limit. One point of confusion is worth clearing up. A pay-by-mobile casino has nothing to do with the PayByPhone car-park app. They share a name and a smartphone. Nothing else.

So if you want a UKGC-licensed casino that bills a deposit straight to your phone account, the next section ranks the four operators that do it today.

Best pay-by-mobile casinos UK 2026

Four UKGC-licensed casinos accept a pay-by-phone deposit in the UK in 2026: Casushi through Boku, MrQ and Hot Streak Casino through Fonix, and Mr Vegas through Siru Mobile. Every one is verified on the UK Gambling Commission's public register.

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 a pay-by-phone provider today, either at the live cashier or through a current public-source listing.

A casino only appears here if both checks pass.

That standard is stricter than most affiliate sites apply, and it's the reason this list is shorter than the seven-strong rosters you'll see elsewhere. The April 2026 doubling of Remote Gaming Duty has thinned the operator pool, and several brands that once took Boku have quietly dropped it. If you want to understand the providers sitting behind these casinos, compare them in our Boku vs Fonix vs Siru guide.

Casushi (Boku): the lead recommendation

Casushi is the only operator in our pool with confirmed-current Boku support, which makes it the lead pick for anyone who specifically wants carrier billing. It's operated by Solaya Group Limited under UKGC account number 100050, a detail you can verify both on the register and in the casino's own banking page. The minimum Boku deposit is £10, and Casushi works with Sky Mobile, which runs on the O2 network.

The welcome offer, per affiliate consensus, is 100% up to £50 plus 50 spins on Starburst, valid on Boku deposits. Treat that as indicative until you confirm it at signup. And remember the Boku £8 first-deposit ceiling here: your first carrier-billed top-up is limited to £8 before the standard £30 daily allowance applies, which is a Boku rule rather than a Casushi one.

MrQ (Fonix): no-wagering spins

MrQ answers a question players keep asking. It hasn't stopped mobile deposits, it simply moved off Boku. The casino is operated by Tek Fox Ltd under UKGC account 60629, confirmed on the register and in the MrQ footer. Pay-by-mobile now runs through Fonix at a £10 minimum, with the £40 daily and £240 monthly carrier ceiling.

The known welcome offer is 200 cash spins with no wagering on the code POTS200, reported by talkSPORT in its 2026 Fonix casino coverage. The no-wagering structure is unusual and genuinely player-friendly, because winnings from those spins aren't locked behind a playthrough multiplier. Just confirm the code is still live before you deposit.

Hot Streak Casino (Fonix)

Hot Streak Casino is operated by Grace Media (Gibraltar) Limited under UKGC account 57869, registered at Sovereign Place, 117 Main Street, Gibraltar. Its homepage 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. Per the OLBG May 2026 pay-by-phone casinos listing, Hot Streak Casino takes Fonix Mobile deposits at a £10 minimum, with a £30 daily and £240 monthly limit, and those deposits are eligible for promotions. The UKGC licence is primary-source confirmed; the Fonix integration rests on a public-source bridge until a logged-in cashier check confirms it. Read any welcome offer at the cashier before you commit a deposit.

Mr Vegas (Siru Mobile)

Mr Vegas carries the lowest displayed minimum in the pool, listed at £5.12 through Siru Mobile, and the odd figure has a simple explanation. It's operated in the UK by Videoslots Limited under UKGC account 39380. Siru is a direct carrier billing provider, and it adds roughly 25% at the carrier-merchant layer, so a round £4 net deposit displays as £5.12 gross.

That uplift is the trade-off for a sub-£10 entry point, and it's worth weighing against the flat £10 you pay on Boku or Fonix. Siru sits under the same direct carrier billing umbrella as Boku and Fonix, but it's a niche option rather than a mainstream one.

How pay-by-mobile deposits work (Boku and Fonix)

Boku is the primary pay-by-phone provider at UK casinos. Its FCA-authorised entity, Boku Account Services UK Limited (FRN 900030), sits behind carrier-billed deposits capped at £30 per day and £240 per month, with an £8 ceiling on the first deposit. Fonix Mobile plc is the secondary provider, used by MrQ and Hot Streak Casino, and Siru Mobile is the niche third option used by Mr Vegas.

You can read the providers in more depth on our Boku casinos UK and Fonix casinos UK pages, or compare all three in Boku vs Fonix vs Siru.

Boku: the primary provider

Boku is the most common pay-by-phone provider at UK casinos, and the one behind Casushi. The regulated arm is Boku Account Services UK Limited, authorised by the FCA as an Electronic Money Institution under FRN 900030. A separate group entity, Boku Network Services UK Limited (Companies House 05044979), handles trading and integration but isn't the FCA-authorised arm, so any regulatory claim points to Account Services. Boku deposits carry an £8 first-transaction ceiling, then a £30 daily and £240 monthly cap.

Fonix Mobile plc: the secondary provider

Fonix Mobile plc is the second provider, used by MrQ and Hot Streak Casino. It's a London Stock Exchange-listed payment institution trading under the ticker FNX, founded in 2006 and admitted to the exchange in October 2020. Fonix carrier billing runs under a £40 daily and £240 monthly ceiling set by Phone-paid Services Authority rules, which is why Fonix operators can clear slightly more per day than Boku.

Why the £30 cap holds across operators

The £30 daily Boku allowance is tied to your carrier account, not to any single casino. Boku tracks carrier-billed gambling spend at the account level, so the £30 daily and £240 monthly limits apply across every Boku-billed casino you use. Opening a second pay-by-phone account doesn't unlock a second £30 allowance. Deposit £20 at one Boku casino, and you've £10 left across all of them that day. That account-level constraint is the single most useful thing to understand about the method, because it turns the cap into a genuine ceiling rather than a per-site limit.

To deposit, the flow is short. Open the cashier and choose Pay by Mobile or Boku. Enter your mobile number. Enter the deposit amount within the cap. Confirm the SMS PIN the provider sends. The deposit lands instantly, and the charge appears on your next mobile bill or comes off your pay-as-you-go credit. For a fuller walkthrough, see how pay-by-phone casino deposits work.

Mobile carrier compatibility (EE, O2, Vodafone, Three and MVNOs)

Pay-by-mobile casino deposits work on all four UK mobile network operators, EE, O2, Vodafone, and Three. MVNO support is mixed: Tesco Mobile and Sky Mobile clear deposits, while Giffgaff and Lebara block gambling carrier-billing in their own terms, and Asda Mobile is conditional. Naming Three matters, because most competitor pages skip it.

EE, O2, Vodafone, and Three

All four UK network operators support Boku and Fonix carrier billing for licensed gambling merchants. EE, O2, Vodafone, and Three each clear a pay-by-phone casino deposit directly against your contract or pay-as-you-go balance, with no extra app or wallet. The deposit experience is identical across the four: choose Pay by Mobile, confirm the SMS PIN, and the charge settles on your bill. Pay-monthly and pay-as-you-go customers can both use the method, though pay-as-you-go users are limited by their available credit rather than a billing cycle. Three is often the carrier other sites forget, but it works the same way as the rest, and leaving it out is a sign a comparison page hasn't been checked recently.

Giffgaff, Tesco Mobile, Sky Mobile, Lebara and Asda Mobile

MVNOs ride on an MNO backbone, so carrier billing usually follows the host network. But some MVNOs block gambling carrier-billing in their own terms regardless of the host. Tesco Mobile and Sky Mobile, both on O2, clear a deposit through the underlying network's Boku or Fonix integration. Giffgaff blocks gambling carrier-billing across its service even though it rides O2 rails, and Lebara's terms exclude it even though it rides Vodafone. Asda Mobile, on Vodafone rather than O2, is conditional, so confirm it at the cashier. The host network tells you which rail the deposit would use, but the MVNO's own gambling policy decides whether it clears at all. For the per-MVNO detail, see the mobile carrier compatibility matrix.

Sky Mobile is confirmed current. It sits on the O2 network, and pay-by-phone casino deposits at Boku-integrated operators such as Casushi remain functional in May 2026. Sky Mobile changed its carrier-billing setup in early 2025, which left some older guides out of date, so the current status is worth stating plainly: it works. Support can still vary by operator and by individual offer, so check the cashier recognises your network before you deposit, and don't assume a method that worked last year is still live. For a full breakdown, see the mobile carrier compatibility matrix and the dedicated Sky Mobile pay-by-phone casino status page.

£5 vs £10 minimum deposit at pay-by-phone casinos

The lowest pay-by-phone minimum deposit in 2026 belongs to Mr Vegas through Siru Mobile, listed at £5.12, where the gross figure reflects Siru's carrier-side fee uplift on a roughly £4 net deposit. Boku and Fonix operators sit at a £10 minimum.

The minimum is set by the provider and the operator together, not by a single market floor. There's no universal £5 pay-by-phone minimum across the UK; the figure shifts with the provider behind the cashier. Search results promising a flat "£5 minimum deposit pay-by-phone casino" tend to flatten this distinction, so it pays to know which provider the cashier actually uses before you assume a fiver gets you in.

The £5 tier: Mr Vegas via Siru Mobile

Mr Vegas is the only sub-£10 option, and the £5.12 figure isn't arbitrary. Siru Mobile adds roughly 25% at the carrier-merchant layer, so a round £4 net deposit displays as £5.12 gross. That uplift is the cost of the lower entry point, and it's worth knowing before you assume £5.12 is a rounding quirk. The money reaching your casino balance is the net £4.

The £10 tier: Casushi, MrQ and Hot Streak Casino

Casushi on Boku, plus MrQ and Hot Streak Casino on Fonix, all set a £10 minimum, which is the mainstream default for pay-by-phone deposits. One number to keep separate at Casushi is the Boku £8 first-deposit ceiling. That's a cap on your first carrier-billed transaction, not the operator's minimum: your first Boku top-up can't exceed £8, after which the £10 minimum and the £30 daily allowance apply normally. The £8 ceiling and the £10 minimum are two different figures, and conflating them is a common mistake.

Pay-by-phone slots: RTP, jackpots and top providers

Pay-by-phone slots at UKGC-licensed UK casinos qualify for the same published RTP as any other deposit method. Funding a slot through Boku, Fonix, or Siru doesn't change the return-to-player percentage the game reports.

UKGC licensing conditions require operators to make RTP information available, and that figure is set by the game, not by how you funded the spin. A slot with a 96% RTP returns 96% whether you deposited by debit card or by phone bill, because the percentage is a property of the game's maths. The deposit method touches the cashier, not the game engine, so there's no penalty in expected return for using carrier billing. This matters because some players assume a low-friction deposit method means a worse game.

It doesn't.

Jackpot eligibility carries one footnote worth checking. Some operators exclude phone-funded stakes from specific progressive jackpot pools under their own terms, so if you're chasing a progressive, confirm the operator's T&C treats phone-bill deposits the same as card deposits before you play. This is an operator-level rule rather than a market-wide one, and it tends to apply to a handful of specific jackpot titles rather than the whole library. Standard fixed-jackpot and non-jackpot slots aren't affected.

The slot libraries at the recommended operators stock the major studios. Where stocked, you'll find Pragmatic Play, NetEnt, Play'n GO, Big Time Gaming, and Yggdrasil titles, which between them cover most of the well-known UK slot catalogue, from Starburst and Gonzo's Quest to the high-volatility Megaways games. Big Time Gaming is the studio behind the Megaways engine, while Pragmatic Play and Play'n GO drive a large share of the new releases UK casinos add each month. The strongest libraries among our four sit at the £10-tier Boku and Fonix operators, so if game range matters more than a sub-£10 entry, Casushi, MrQ, and Hot Streak Casino are the ones to compare. Mr Vegas remains the choice if the lower Siru entry point is the priority over catalogue breadth.

Welcome bonuses and no-deposit offers for pay-by-phone deposits

Some welcome bonuses at UK casinos exclude phone-funded deposits from bonus eligibility, so always check the operator's bonus T&C before you deposit through Boku or Fonix. A qualifying deposit by card may unlock an offer that the same deposit by phone bill does not.

This is the single most important habit when claiming any pay-by-phone bonus. The eligibility rule lives in the operator's own bonus terms, and it varies by operator.

Welcome bonuses and phone-bill eligibility

The strongest known offers across the four operators are MrQ's 200 cash spins with no wagering and Casushi's 100% match up to £50 plus 50 Starburst spins, both pending confirmation at the live cashier. A wagering requirement tells you how many times you must bet a bonus before withdrawing, and the base matters as much as the multiple. A 30x bonus requirement on a £50 bonus means £1,500 in bets, while a 30x bonus-plus-deposit requirement on the same £50 bonus and a £50 deposit means £3,000. So always read which base the operator applies.

Here's how the four compare, with every headline figure to be confirmed at the cashier before you rely on it.

Before you claim any offer, set a deposit limit. The 31 October 2025 UKGC mandate requires every operator to prompt you for a deposit limit before your first deposit, and applying one costs you nothing while it protects the bankroll you're about to wager.

No-deposit bonuses

No-deposit free-spin offers, the kind awarded on registration without a deposit, are scarce among the current four-operator pay-by-phone pool. The brands that historically ran the best-known no-deposit spins on this method have either dropped Boku or left the UK market, so we won't name a no-deposit offer here unless it's verified live. This honesty matters, because a no-deposit offer attached to a casino that no longer takes phone-bill deposits is worthless to a pay-by-phone player, however generous the headline.

If you see a no-deposit pay-by-phone offer advertised elsewhere, check two things before acting on it: that the operator still holds an active UKGC licence on the public register, and that its cashier still lists a phone-bill option. MrQ's 200 no-wagering spins, while technically a deposit offer rather than a no-deposit one, is the closest thing to a low-friction free-spins deal in the current pool, because the winnings aren't locked behind a playthrough requirement. You can also explore pay by phone bingo as an adjacent option, where free-ticket offers sometimes appear.

Pay-by-phone casino withdrawals

No, you can't withdraw winnings to your phone bill at any UKGC-licensed casino. Pay-by-mobile is deposit-only by design.

The reason is mechanical. Boku, Fonix, and Siru are all inbound-only carrier-billing routes, which means money can travel from your phone account to the casino but not back. Carrier-side reconciliation is a one-way payment route, not a banking route, so there's no channel to push a payout onto a mobile bill. On top of that, UKGC anti-money-laundering rules require withdrawals to go to a verified account in your name, and a phone bill isn't one.

So withdrawals route through a standard method instead. You'll typically choose Faster Payments bank transfer, a debit card refund, or an e-wallet such as PayPal or Trustly, depending on what the operator offers. Bank transfers usually clear within a working day once approved, debit card refunds can take two to five days, and e-wallets are often the quickest, though processing times vary by operator and by your own bank. The method you withdraw to doesn't have to match the method you deposited with, which is exactly why phone-bill players need a second method ready.

Your first withdrawal triggers a Know Your Customer check, where the operator confirms your identity and the account you're withdrawing to. That usually means uploading proof of ID and proof of address once, after which later withdrawals clear without repeating the step. The check exists to satisfy UKGC anti-money-laundering rules, and it's the same process whether you deposited by card or by phone bill.

Plan for this before you deposit. If you fund by phone and never add a withdrawal method, your first cash-out will pause while you set one up and pass KYC. The simplest approach is to add a debit card or bank account to the cashier as soon as you register, so the route is ready the moment you want to withdraw. To weigh the method against the alternatives, see pay-by-phone vs debit card and e-wallets at UK casinos.

Pay-by-phone safety and UKGC responsible gambling

The £30 daily Boku cap on UK pay-by-mobile deposits pre-dates the UKGC's 31 October 2025 deposit-limit prompt mandate by more than a decade. The October 2025 rule effectively made carrier billing's built-in cap the market standard.

Read the right way, the £30 Boku daily and £240 monthly limits aren't a quirk of carrier billing. They're a built-in deposit ceiling the regulator has now asked every operator to replicate. The 31 October 2025 mandate requires UKGC-licensed operators to offer a deposit-limit prompt before a player's first deposit. Applying a limit is straightforward: at signup, the cashier presents the prompt, and you set a daily, weekly, or monthly figure the operator then enforces. With a Boku casino, the £30 daily cap already does part of that work for you.

Carrier billing also adds a layer of safety the regulator didn't design but plenty of players value. A pay-by-phone deposit never exposes your card number or bank details to the casino, because the charge travels through the provider and lands on your mobile account. For someone who wants to gamble without a card on file, that separation is the whole appeal, and the £30 daily Boku ceiling means a bad session is capped at a known figure rather than the limit of an overdraft.

Every UKGC-licensed operator integrates GamStop, the national self-exclusion scheme, so registering with GamStop blocks new accounts and deposits, including phone-billed ones, across all licensed operators. Self-exclusion through GamStop is a single registration that applies to every licensed UK operator at once, which means a phone-bill deposit at any of the four casinos above will be refused once you're on the scheme. For support, GambleAware (formerly BeGambleAware) runs 24/7 help, and GamCare operates the National Gambling Helpline on 0808 8020 133. These services cover pay-by-phone players the same as any other UK gambler, and the helpline is free and confidential.

The regulatory backdrop is tightening. Remote Gaming Duty doubled from 21% to 40% on 1 April 2026, which added cost pressure across the operator pool and contributed to brands dropping marginal payment methods such as Boku. That cost pressure is also why the pay-by-phone operator list keeps shrinking. When an operator weighs the margin on a carrier-billed deposit against the duty increase, the marginal payment method is the first to go. It's the practical reason this page lists four operators rather than the seven you'll find on slower-moving affiliate sites.

Because licence status can change, verify any operator on the UKGC public register before you deposit, and treat quarterly re-verification as routine. The register shows the licensee's legal name, account number, and current status, so a sixty-second check tells you whether the casino you're about to fund still holds an active licence. For the detail, see our UKGC pay-by-phone responsible gambling rules and the UK gambling regulation roadmap 2026.

Pay-by-mobile casino FAQ

What casinos accept pay by mobile?

Four UKGC-licensed casinos accept pay by mobile in 2026: Casushi via Boku, MrQ and Hot Streak Casino via Fonix, and Mr Vegas via Siru Mobile. Each holds an active UK Gambling Commission licence you can check on the public register before depositing.

What can I use pay by mobile for?

You can use pay by mobile for deposits at UKGC-licensed casinos through Boku, Fonix, or Siru. Boku deposits are capped at £30 a day and £240 a month; Fonix and Siru sit at a £40 daily ceiling. The method is deposit-only.

Has Mr. Q stopped mobile deposits?

No. MrQ moved off Boku and now takes pay-by-mobile through Fonix at a £10 minimum. The casino is operated by Tek Fox Ltd under UKGC account 60629. Confirm the Fonix option at the MrQ cashier and the licence on the register at publish time.

How to gamble using phone bill?

Open the casino cashier, choose Pay by Mobile or Boku, enter your mobile number, enter a deposit amount within the cap, and confirm the SMS PIN. The deposit lands instantly and the charge appears on your mobile bill or pay-as-you-go credit.

What is the best UK mobile online casino?

Casushi is our lead pick, because it's the only operator with confirmed-current Boku support and a verified UKGC licence under Solaya Group Limited, account 100050. We rank operators by public-register verification and live pay-by-phone support, not by bonus size.

What gambling sites let you pay by mobile?

The same four verified operators let you pay by mobile: Casushi on Boku, MrQ and Hot Streak Casino on Fonix, and Mr Vegas on Siru Mobile. Each appears in our ranked list above with its licensee and UKGC account number.

Can I withdraw using pay by mobile?

No, pay by mobile is deposit-only at every UKGC-licensed casino. Withdrawals route through bank transfer, debit card refund, or an e-wallet such as PayPal, because carrier billing is a one-way route and UKGC rules require a verified withdrawal account.

How to pay by mobile MrQ?

Open the MrQ cashier, select Pay by Mobile, enter your mobile number and a deposit amount of £10 or more, then confirm the SMS PIN Fonix sends. The charge settles on your mobile bill. MrQ's help pages carry the operator-specific steps.

Is gnoming illegal in the UK?

Gnoming means opening multiple accounts to abuse bonuses or evade restrictions. It's prohibited under UKGC Licence Conditions and Codes of Practice, and operators can void winnings and close accounts found doing it. It breaches the terms of every UKGC-licensed casino.

18+ only. Please gamble responsibly. BeGambleAware.org.