Two entries is a short list on purpose. Choosing where to play still comes down to security, fair bonuses and deposit speed, and both casinos here passed the same hands-on cashier checks – a real phone-bill deposit, confirmed limits and fees, and a tested withdrawal route. Our exact criteria are below.
What Counts as Pay by Mobile at UK Casinos?
For this guide, Pay by Mobile means any casino deposit method where you fund your account using your mobile phone number, rather than a card, bank account or e-wallet. The charge is either added to your monthly phone bill or deducted from your prepaid mobile credit.
Depending on the casino cashier, the same type of payment may appear under different names, including Pay by Mobile, Pay by Phone, Fonix, Boku or mobile billing – all of them running on the UK’s phone-paid services framework historically branded PayForIt. The label can vary, but the core flow is the same: enter your mobile number, confirm the payment, and receive casino funds almost instantly. At both casinos listed here, the flow is powered by Fonix.
Why Have Most UK Casinos Dropped Pay by Mobile?
Carrier billing used to be everywhere; today only a handful of UKGC-licensed sites still run it. The turning point was the UKGC’s April 2020 credit-card deposit ban: a phone-bill charge paid off with a credit card is an indirect route to gambling on credit, so operators faced extra compliance work to keep the method compliant, and most quietly removed it.
That is why this page works the other way around from a typical “best of” list. Instead of ranking twenty sites, we verify where the option actually works in the live cashier and list only those casinos. When we verify Pay by Mobile at another UKGC-licensed site, it gets added here.
Why Choose a Pay by Mobile Casino
Pay by Mobile turns your phone bill into a cashier and still features among the best mobile casino sites in the UK. You enter your number, confirm by SMS or an on-screen tap, and a £10 deposit lands instantly with no card or bank details exposed. At Duelz and IvyBet the deposit runs through Fonix, a UK carrier-billing provider regulated for phone-paid services, and neither casino adds a deposit fee.
The appeal is control. Charges appear on your monthly bill or come off pay-as-you-go credit, and UK phone-paid services rules cap spending at £40 per day and £240 per month, which keeps casual budgeting simple by design.
One trade-off matters before you start. A pay by mobile casino cannot pay winnings back to your phone, because carrier billing is one-directional. You withdraw to a method such as Trustly, debit card or bank transfer instead – in our Duelz test the Trustly payout arrived in about six minutes.
Advantages of Pay by Mobile Casinos
- Instant, Fee-Free Deposits: Funds appear in seconds once you confirm, and neither listed casino adds a deposit charge.
- No Bank Details Shared: Only your phone number is used, keeping card and account data private.
- Built-in Spending Control: Regulatory caps of £40 per day and £240 per month make it hard to overspend.
- Bonus Eligible at Listed Sites: We confirmed in both cashiers that phone-bill deposits qualify for the welcome offers, but always check the bonus terms before claiming.
- UKGC-Licensed Sites: Duelz (SuprPlay Limited) and IvyBet (Betable Limited) both hold active UK Gambling Commission licences.
Disadvantages of Pay by Mobile Casinos
- No Withdrawals: You cannot cash out to your phone bill; Trustly, debit card or bank transfer is required.
- Hard Deposit Caps: £40 per day and £240 per month are regulatory ceilings, so the method suits small stakes only.
- Limited Choice: Most UK casinos have dropped carrier billing, so the pool of sites is small.
- KYC Still Applies: Identity checks are needed before your first withdrawal.
Who Should Use Pay by Mobile Casinos?
Pay by Mobile is best for casual UK players who want a small, fast deposit without entering card details. It works well for low-stakes slots, live tables and short mobile sessions where a £10 deposit is enough.
It is less suitable for high-stakes players or anyone who wants the same method for deposits and withdrawals. The hard daily and monthly caps mean debit cards, bank transfers or e-wallets may be better for larger deposits – see how they compare in the alternatives section below.
How We Pick the Best Pay by Mobile Casinos
We do not list a casino just because it mentions mobile deposits – plenty of sites still advertise the method years after removing it. Each candidate for the best online casino that accepts pay by mobile is checked for a genuine carrier-billing flow in the live cashier, clear fees, realistic deposit limits, bonus eligibility, UKGC licensing and a workable withdrawal route.
Our Criteria for Rating Top Pay by Mobile Casino Sites
Licensing comes first. Every casino we recommend must hold a valid UK Gambling Commission licence. We then check whether the cashier supports a real Pay by Mobile, Pay by Phone, Fonix or equivalent carrier-billing option – not just a help-page mention.
Cost and limits come next. We look for the minimum deposit, the per-transaction and daily caps, the monthly ceiling and any fixed mobile-billing fee before ranking the site. Pay by Mobile is designed for smaller deposits, so transparent fees and realistic limits matter more than headline bonus size.
Withdrawal reliability is also important. Because Pay by Mobile is deposit-only, we check whether the casino supports fast withdrawal methods such as Trustly, debit card or bank transfer, and we time a real payout wherever possible.
Real Testing: A Pay by Mobile Deposit in Practice
For our hands-on test, we registered at Duelz and made a £10 Pay by Mobile deposit through the live cashier. The payment was confirmed against our mobile number via Fonix, the balance appeared instantly, and exactly £10 was charged – no deposit fee was added at any step.
We then tested the withdrawal route. As expected, winnings could not be paid back to the phone bill, so we cashed out via Trustly instead – the payout arrived in around six minutes after approval. That combination of fee-free phone deposits and near-instant bank payouts is the main reason Duelz tops this page.
We ran the same checks at IvyBet: mobile-number entry, confirmation step, deposit speed, fees, limits, bonus eligibility and withdrawal routing. The Fonix flow worked as described, with no deposit fee and the network-dependent monthly cap shown in the cashier.
Which Is the Best Pay by Mobile Casino?
Duelz is our pick for the best pay by mobile casino in the UK right now. It pairs fee-free, instant Fonix deposits from £10 with the fastest tested payout on this page – about six minutes via Trustly – plus a 2,000+ game library and a welcome offer that phone-bill deposits qualify for. You can read our full Duelz Casino review for the complete breakdown.
It is not flawless. Like every carrier-billing casino, Duelz does not support withdrawals back to your phone bill, and the £40 daily cap rules out bigger bankrolls. For instant, low-risk mobile deposits, though, it is the most rounded option we tested.
| Best Pay by Mobile Casino | Duelz |
|---|---|
| Pay by Mobile Deposit Time | Instant |
| Pay by Mobile Deposit Limits | £10 – £40 daily, £240 monthly |
| Pay by Mobile Withdrawal Time | Not Available – Trustly instead (~6 minutes tested) |
| Deposit Fee | None |
| Bonus Eligibility* | Eligible ➤ 140 Free Spins with a £25 Deposit |
18+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly! www.gambleaware.org Full T&Cs apply.
Games at Pay by Mobile Casino Sites
With only two verified casinos, the good news is that their game libraries barely overlap – Duelz is a gamified slots-and-live-casino specialist, while IvyBet pairs its casino with a full sportsbook. Whichever you pick, everything is fundable through the same fee-free phone-bill deposit.
Slots at Pay by Mobile Casinos
Duelz carries over 2,000 games, including 1,000+ slots from more than 50 studios such as Pragmatic Play, NetEnt, Play’n GO, Push Gaming, Hacksaw Gaming and Nolimit City, with stakes from a few pence so a £10 deposit stretches across plenty of spins. Its trademark twist is the gamified layer: player-vs-player duels, trophies and progression rewards sit on top of the standard lobby.
| Slot Category | Description | Popular Titles |
|---|---|---|
| Classic Slots (3-Reel) | Simple, nostalgic gameplay inspired by old-school fruit machines. | Mega Joker, Break da Bank |
| Video Slots (5-Reel+) | Feature-rich games with bonus rounds, free spins and themed gameplay. | Book of Dead, Gonzo’s Quest |
| Irish & Fruit Themes | Bright, pub-style slots that are hugely popular with UK mobile players. | Rainbow Riches |
| Fantasy & Adventure | Vibrant, story-driven slots with dynamic features and big bonus potential. | Starburst, Immortal Romance |
| Megaways Slots | Shifting paylines offering thousands of ways to win on every spin. | Bonanza Megaways |
| Progressive Jackpots | Huge, ever-growing prize pools triggered randomly or via bonus games. | Mega Moolah, Mega Fortune |
IvyBet: Casino Plus Sportsbook
IvyBet is the row to pick if you want more than slots from one balance. Alongside its casino lobby, it runs a Delasport-powered sportsbook covering 25+ sports, from football and tennis to esports – a combination none of the old carrier-billing brands offered. Note that horse and greyhound racing are not currently covered, so racing punters should look elsewhere.
Live Dealer Games
Both sites rank among the casinos with live tables you can fund by phone – compare them with the top live casino sites. Duelz carries the stronger live range, including Evolution roulette and blackjack tables. Bear in mind that live tables usually contribute little toward wagering requirements, so bonus funds from a mobile deposit may progress slowly there.
Bonuses With Pay by Mobile Casino Deposits
This is the question a Pay by Mobile page exists to answer, so here it is explicitly: at both listed sites, we confirmed in the cashier that phone-bill deposits qualify for the welcome offer. Bonus rules can change, so verify the current terms before depositing.
| Bonus Offer* | 140 Free Spins with a £25 Deposit |
|---|---|
| Min Pay by Mobile Deposit | £10 (£25 to trigger the offer) |
| Deposit Fee | None |
| Claim With Pay by Mobile | Yes – verified in the cashier |
| Secure Link | Get Bonus at Duelz |
| T&C | *18+. New UK players only. Min £25 deposit. Wagering applies. BeGambleAware.org |
The Duelz offer gives you up to 140 free spins for a £25 first deposit, released as 20 spins per day for 7 consecutive days. Each batch must be claimed manually and expires at midnight, spins are worth £0.10, and winnings are credited as bonus funds capped at £100 per day with 10x wagering to clear within 7 days. The headline number is the maximum available rather than a guaranteed payout, so read the full terms before you claim.
IvyBet takes a different angle: deposit £20 or more and its welcome offer pays a 25% deposit match up to £50 as a cash reward, with 10x wagering on selected games to complete within 28 days of your first deposit. Sportsbook-side promotions such as free-bet deals rotate regularly, so check the current promotions page before betting.
One general rule still applies everywhere: bonus eligibility depends on the casino, not the billing provider. Some operators exclude specific payment methods from promotions, so if you play anywhere beyond this list, check whether phone-bill deposits trigger the offer before you commit.
How to Deposit at an Online Casino That Accepts Pay by Mobile
A 6-Step Guide to Making a Pay by Mobile Deposit
Funding takes under a minute at casinos that accept Pay by Mobile. Follow the step-by-step guide below to register, verify, and make your first Pay by Mobile deposit, then start playing the slots and live games covered earlier in this guide.
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Pick a Licensed Site – Choose a UKGC-regulated casino from our verified list above.
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Create Your Account – Register with accurate details. Have photo ID ready, as KYC is required before your first withdrawal.
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Open the Cashier – Go to the deposit page and select Pay by Mobile, Pay by Phone or Fonix from the payment options.
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Enter Your Number and Amount – Type your mobile number and a deposit from £10. There is no deposit fee at either listed casino.
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Confirm the Payment – Approve via the SMS one-time code or on-screen tap. Funds appear instantly and the charge goes to your phone bill or credit.
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Claim and Play – Deposit £25 at Duelz if you want the welcome offer, then play any slots or live games on site.
Useful Tip: ➤ Set a deposit limit in your account before you start. Pay by Mobile is fast and frictionless, so a self-imposed cap keeps casual play under control from day one.
Pay Monthly vs Prepaid Mobile Credit
Pay by Mobile works slightly differently depending on your mobile account type. If you are on a pay-monthly contract, the casino deposit is usually added to your next phone bill. If you use prepaid or pay-as-you-go credit, the deposit and any fee are deducted from your available mobile balance.
In both cases, the casino should credit the deposit almost instantly once you confirm the payment. If you do not have enough prepaid credit, or your mobile account has premium-payment restrictions, the transaction may be declined.
Deposit Limits, Fees and Processing Times
Pay by Mobile is built for small, instant top-ups, and UK phone-paid services rules set the ceiling: a maximum of £40 per day and £240 per month across carrier-billing merchants. At the listed casinos the minimum deposit is £10, and individual operators or networks can apply lower monthly caps – IvyBet’s sits around £120 depending on your network. Always confirm the amounts shown in the cashier.
Neither Duelz nor IvyBet charges a Pay by Mobile deposit fee – the casino absorbs the carrier-billing cost, so a £10 deposit charges exactly £10 to your phone account. That is worth underlining because some pay-by-phone casinos add a fixed fee per deposit. Deposits process instantly, while payouts depend on the withdrawal method: our tested Trustly cashout at Duelz arrived in about six minutes after approval.
Pay by Mobile itself does not support withdrawals. If a casino charges a fee for debit card, bank transfer or another cashout method, that is a separate operator fee rather than a Pay by Mobile fee.
| Pay by Mobile Casino | Deposit Time | Min Deposit | Daily Cap | Monthly Cap | Deposit Fee |
|---|---|---|---|---|---|
| Duelz | Instant | £10 | £40 | £240 | None |
| IvyBet | Instant | £10 | £40 | ~£120 (network-dependent) | None |
Can You Withdraw from a Casino Using Pay by Mobile?
No. Pay by Mobile, Pay by Phone, Fonix and similar carrier-billing flows are designed for deposits only. They move money from your mobile account to the casino, but they cannot send winnings back to your phone bill or prepaid balance.
To cash out, you will need an approved withdrawal method such as Trustly, debit card or bank transfer. The gap matters less than it used to: our tested Duelz withdrawal via Trustly landed in about six minutes. Complete any KYC checks early, as identity verification is usually required before your first withdrawal.
Which UK Mobile Networks Support Pay by Mobile Casino Deposits?
At the listed casinos, Fonix supports the four major UK networks – EE, O2, Vodafone and Three. Availability can still vary for prepaid accounts, MVNOs running on those networks, business contracts, child accounts or numbers with premium-payment blocks.
Before depositing, check the casino cashier and your mobile account settings. If Pay by Mobile is unavailable, your spend cap may be too low, premium-rate billing may be disabled on your account, or your MVNO may not support carrier billing.
| Mobile Network Type | Pay by Mobile Availability | What to Check |
|---|---|---|
| EE, O2, Vodafone, Three | Supported at the listed casinos via Fonix | Spend caps, premium-payment settings and account restrictions |
| Prepaid / PAYG accounts | Supported if enough credit is available | Available balance must cover the deposit |
| MVNOs | Varies by host network and billing setup | Check whether carrier billing is enabled |
| Business or restricted accounts | Often limited or blocked | Account owner restrictions and premium-payment blocks |
Why Was My Pay by Mobile Casino Deposit Declined?
A Pay by Mobile deposit can fail even when the casino supports the method. The most common reason is that your mobile account, network or payment provider has blocked the transaction before it reaches the casino.
- Not enough prepaid credit: PAYG users need enough balance to cover the deposit.
- Daily cap reached: Carrier-billing spend is limited to £40 per day across merchants.
- Monthly ceiling reached: The £240 monthly limit (lower at some casinos and networks) counts all your carrier-billing spend, not just gambling.
- Premium-payment block: Some accounts disable carrier billing, premium SMS or phone-paid services by default.
- Unsupported network: Some MVNOs do not support every carrier-billing provider.
- Business or child account restrictions: Some managed accounts block gambling-related or phone-paid transactions.
- KYC or account issue: Your casino account may need verification before more payments are accepted.
What If a Pay by Mobile Deposit Is Charged but Not Credited?
If the charge appears on your phone bill or prepaid balance but the casino funds do not appear, contact the casino support team first and provide the transaction time, mobile number used, deposit amount and any SMS confirmation details. The casino can usually trace whether the payment reached the cashier.
If the casino cannot locate the transaction, you may also need to contact your mobile network or the payment provider shown during the deposit flow. Do not attempt repeated deposits until the missing payment has been resolved, as this can create duplicate charges.
Is It Safe to Use Pay by Mobile at Online Casinos?
Yes, provided you use a UKGC-licensed casino and understand the limits of the method. Duelz is operated by SuprPlay Limited, UKGC-licensed since 2017, and IvyBet by Betable Limited, which has held its UK Gambling Commission licence since 2011. UK-licensed operators must follow rules on fair gambling, safer-gambling tools, complaints handling, identity checks and clear disclosure of how customer funds are protected. You can confirm any licence directly on the UKGC public register.
The payment layer can also reduce exposure because you do not enter card or bank details at the casino cashier. Instead, the deposit is confirmed through your mobile account and charged to your phone bill or prepaid balance. That said, Pay by Mobile is still real-money gambling, so you should set deposit limits before using it regularly.
Because the money may not leave your bank immediately, Pay by Mobile can feel lower-friction than card deposits. Set both casino deposit limits and mobile-network spend caps to avoid phone-bill shock. One IvyBet-specific note: Betable’s brands share one network, so self-excluding at IvyBet also blocks you at its sister sites such as Ivy Casino – by design, and automatically.
Tips to Stay Safe and In Control
- Confirm the operator’s UKGC licence number on the public register before depositing.
- Set deposit and loss limits in your account, as Pay by Mobile makes top-ups very quick.
- Check the daily and monthly caps in the cashier so a declined deposit does not surprise you.
- Have ID ready for KYC verification to avoid delays on your first withdrawal.
- Use GamCare or GAMSTOP if play stops feeling fun and you need support or a break.
Fonix, Boku and PayForIt: UK Pay by Mobile Casino Providers Explained
UK Pay by Mobile casino deposits are powered by carrier-billing providers that sit between the casino and your mobile network. The cashier may show a provider name such as Fonix or Boku, or a broader label such as Pay by Mobile, Pay by Phone or mobile billing.
Fonix
Fonix is the provider that matters most on this page – it powers the Pay by Mobile flow at both Duelz and IvyBet. The London-based company specialises in UK carrier billing and SMS payments across EE, O2, Vodafone and Three. You enter your mobile number, confirm with a one-tap prompt or an SMS one-time code, and the deposit lands in seconds. Deposits are instant, the listed casinos add no fee, and withdrawals are not available through the same route.
Boku
Boku is still the most recognisable name in mobile billing, but its UK casino footprint has been shrinking steadily since 2023, with most large operators quietly dropping it – a knock-on effect of how carrier billing interacts with the UKGC’s 2020 credit-card deposit ban. Neither casino on this page uses Boku. Where it survives, the player flow is the same as Fonix: number in, SMS confirmation, charge to your phone bill.
PayForIt
PayForIt is not a cashier brand you pick but the UK’s underlying phone-paid services scheme that providers like Fonix and Boku operate within. Its consumer branding has largely disappeared from casino cashiers, though some legacy sites still use the label. If a cashier says PayForIt, treat it as a generic carrier-billing flow and check which provider actually processes the payment.
Other Carrier-Billing Flows
Some casinos use generic labels rather than naming the payment provider. If the cashier lets you deposit by entering your mobile number and charging your phone bill or prepaid balance, we treat it as a Pay by Mobile casino deposit for the purposes of this guide.
Pay by Mobile Providers Compared
| Provider / Flow | How It May Appear at Casinos | Status at UK Casinos | Withdrawals? | Used by Our Listed Sites |
|---|---|---|---|---|
| Fonix | Fonix, Pay by Mobile, Pay by Phone | The current lead provider for casino carrier billing | No | Yes – Duelz and IvyBet |
| Boku | Boku, Pay by Mobile, Pay by Phone | Declining – most major operators have dropped it | No | No |
| PayForIt | PayForIt, phone-bill deposit | Legacy scheme label, rarely shown in modern cashiers | No | No (underlying framework only) |
| Other carrier billing | Mobile deposit, phone-bill deposit | Casino-specific labels for the same flow | No | – |
Alternatives to Pay by Mobile for UK Players
If the no-withdrawal limit or the £40 daily cap is a dealbreaker, several methods offer two-way transfers. In keeping with the rest of this page, the list below only includes methods available at the casinos we verified – with Trustly first, since it paid out our Duelz test withdrawal in about six minutes. Each option is covered in detail on its own UK guide. See how Pay by Mobile compares to other popular UK casino payment options before you choose.
| Payment Method | Best For | Withdrawals Supported? | Main Advantage Over Pay by Mobile |
|---|---|---|---|
| Trustly | Fast bank-to-bank deposits and payouts | Yes | Paid our Duelz test withdrawal in ~6 minutes |
| Debit Card | Everyday casino deposits and withdrawals | Yes | Higher limits and no phone-bill charge |
| Bank Transfer | Larger withdrawals | Yes | Direct cashout to bank account |
| PayPal | Fast e-wallet payments | Yes | Deposits and withdrawals in one wallet |
| Paysafecard | Prepaid cash-style deposits (Duelz only) | Usually limited | No phone bill involved |
FAQs About Using Pay by Mobile at Online Casinos
Below are the questions UK players ask most about using a Pay by Mobile casino. Each answer links back to the relevant section of this guide if you want the full detail.
1️⃣ Can I deposit at UK casinos using my mobile phone number?
Yes, but at far fewer sites than a few years ago. UKGC-licensed casinos such as Duelz and IvyBet still offer a genuine Pay by Mobile flow through Fonix: enter your mobile number, confirm the payment, and the deposit is charged to your phone bill or taken from prepaid credit. See what counts as Pay by Mobile for the full breakdown.
2️⃣ Which is the best Pay by Mobile casino in the UK?
Duelz is our current pick. Fonix deposits are instant and fee-free, limits run £10 to £40 per day, and our test withdrawal arrived in about six minutes via Trustly. Read why Duelz tops our list for the full reasoning.
3️⃣ Does a Pay by Mobile deposit cost anything at Duelz or IvyBet?
No. Neither casino adds a deposit fee, so a £10 phone-bill deposit charges exactly £10 - the operator absorbs the carrier-billing cost. Some other pay-by-phone casinos add a fixed fee per deposit, so check this anywhere else you play. Details in limits and fees.
4️⃣ Can I claim a casino bonus with a Pay by Mobile deposit?
Yes. We confirmed in both cashiers that phone-bill deposits qualify for the welcome offers: at Duelz a £25 deposit unlocks up to 140 free spins, while IvyBet pays a 25% deposit match up to £50 as a cash reward on a £20+ first deposit. Bonus rules can change, so always read the terms before depositing. See bonuses with Pay by Mobile deposits.
5️⃣ Can I withdraw winnings back to my phone bill?
No. Carrier billing is one-directional, so Pay by Mobile is deposit-only. You cash out with an approved method such as Trustly, debit card or bank transfer instead - our Duelz test payout landed in about six minutes via Trustly. See withdrawals explained.
6️⃣ What are the deposit limits for Pay by Mobile casinos?
UK phone-paid services rules cap carrier-billing spend at £40 per day, and a £240 monthly ceiling applies across Fonix merchants. Individual casinos and networks can set lower caps - IvyBet's sits around £120 per month depending on your network. Full breakdown under limits and fees.
7️⃣ Why do so few UK casinos accept Boku now?
Boku's UK casino coverage has been shrinking since 2023, largely because of how carrier billing interacts with the UKGC's 2020 credit-card deposit ban. Most large operators dropped it, and both sites on this page use Fonix instead. More in the provider guide.
8️⃣ Which UK mobile networks support Pay by Mobile deposits?
EE, O2, Vodafone and Three are supported at the listed casinos. Pay-as-you-go users need enough credit to cover the deposit, MVNO support varies by host network, and premium-payment blocks on your account will stop the transaction. See network support.
Conclusion
Pay by Mobile has gone from an everywhere-option to a rarity at UK casinos, which changes how you should read any page on the topic: the honest question is not “which of the twenty is best” but “where does it still actually work”. On that test, two UKGC-licensed sites made our list. Whether the cashier labels it Fonix or Pay by Mobile, the flow is the same: enter your number, confirm the payment, and the deposit hits your phone bill or prepaid credit – with no deposit fee at either site. Just remember that carrier billing is deposit-only, so you will cash out via Trustly, debit card or bank transfer.
For the all-round best Pay by Mobile casino experience from our verified list, Duelz stands out for instant fee-free Fonix deposits from £10, a roughly six-minute tested Trustly payout, welcome-bonus eligibility and a 2,000+ game library, all within a UKGC-regulated casino. If you want a sportsbook on the same balance, IvyBet is the alternative worth a look.