Find the Best Pay by Phone Casinos in the UK 2025
Top up your casino balance in seconds using safe and verified pay by phone casino options such as Boku, Payforit or Fonix. See which of our leading UK casinos support pay by phone mobile bill deposits.
Find Your Next Pay by Mobile Phone Casino Here
Our Top 3 Pay by Phone Casinos for December 2025
The majority of UK online casinos are now focusing on mobile gameplay, as the tech continues to improve and make it easier for players to wager, win and withdraw through their phones. Pay by phone technology is a niche payment solution that relies on secure and quick mobile billing, through licensed operators such as Boku, Fonix, Payforit and Siru Mobile.
We’ve looked at several UK online casinos and have identified the three best pay by phone options that are worth your time:
| Rank | Pay By Phone Casino | Pay By Phone Option |
| 🥇 | Duelz | Pay by Mobile (Fonix) |
| 🥈 | Monster Casino | Boku |
| 🥉 | NetBet | Payforit |
Why Pay by Phone Deposits are Reshaping Mobile Casino Banking
Pay by phone is an efficient and secure way for UK players to fund their account at real money casino sites. Despite starting out as a relatively niche banking method, pay by phone is increasingly being selected as the go-to option for quick and direct deposits made through your mobile network. Our experts have evaluated this payment method across dozens of licensed UK casinos, and the results show why pay via phone is a great banking method for mobile-first players.
When it comes to technical specifications, pay with phone is a form of carrier billing where deposits are charged to a player’s monthly phone bill or deducted from prepaid credit. Unlike traditional banking methods such as debit cards and e-wallet services, carrier billing transactions are made across your mobile network’s secure infrastructure.
Service providers use SMS or PIN verification for security, end-to-end encryption, alongside spending limits that are enforced by the Phone-paid Services Authority (PSA). Here are some of the most popular pay by phone providers in the UK:
- Boku: A global operator that supports leading UK networks such as EE, Vodafone, O2 and Three. It has a daily £30 deposit cap and is uses a simple approach of entering your number and confirming transactions by text.
- Fonix: Another great pay by phone bill casino option that supports near-instant deposits and has a daily limit of £40 and monthly limit of £240.
- Payforit: A service operated as a joint venture by major UK carriers including EE, O2, Three and Vodafone. It has similar daily and monthly caps as its competitors.
- Siru Mobile: A Finnish provider that works in partnership with UK phone carriers in a similar way as other providers, but adds processing fees that vary depending on the network carrier used.
Expert Tip: Don’t Miss Out on Casino Bonuses When Using Pay by Phone
Alan Kendall, Casinos Expert: “Topping up your casino account by phone might be a straightforward process, but not all operators will allow you to claim bonuses with it. I once made a deposit at a Boku casino in the UK which did not qualify for the welcome bonus, so I then had to make another deposit using an alternative payment option.
As with any banking method, it’s important to check the casino bonus terms before transferring any funds. Usually, bonus T&Cs will have a small section that identifies excluded payment methods, so you can easily check what qualifies for the promotion you're after.”
How to Set Up and Use Pay by Phone
Pay by phone is one of the simplest deposit methods available to UK casino players, which requires little to no setup. Irrespective of if you’re playing at a Boku casino, or an operator that supports Fonix or Payforit, the billing process passes your deposit through your mobile network rather than a bank.
We’ve tested pay with phone at several UK casinos online and found the entire process simple and quite quick:
- Choose your Pay by Phone casino – As this banking option is quite limited across leading UK casinos, check for its availability at licensed sites by looking out for Pay by Mobile, PayviaPhone or specific providers like Boku, Fonix, Siru Mobile and Payforit.
- Head to the cashier to make a deposit – Log into your casino account and open the cashier. Select the available pay via phone banking method that is compatible with your mobile network.
- Enter your mobile number – Input your UK mobile number. The system will detect whether you have a contract or a prepaid (PAYG) plan, but players with the latter must ensure they have enough funds.
- Confirm via SMS or PIN verification – You will receive a one-time SMS or PIN prompt depending on your provider to authorise the deposit.
- Deposit is processed instantly – The funds will appear immediately in your casino balance, with the charge being added to your phone bill or deducted from your credit. You will also receive a confirmation text from your phone carrier.
A Quick Guide to Pay by Phone Deposits, Fees, and Limits
Pay by phone is not just about convenience, as it also happens to be one of the few payment methods in the UK that has a number of safety restrictions baked in. Each provider that supports casino pay by phone payments must comply with regulations supplied by the Phone-Paid Services Authority. As a deposit-only banking option, you cannot use pay by phone for withdrawals, since the payments can only flow from the carrier network to the casino. We recommend that you link a flexible payment option such as a debit card or an e-wallet to your account in order to cash out casino winnings.
There are very specific spending limits attached to casino top up by phone, which are designed to protect consumers from overspending and support them in maintaining control over gambling budgets. Licensed providers also have daily and monthly spending limits, which typically range from up to £40 per day and £240 per month, acting as a barrier against making deposits on impulse. Furthermore, pay by phone remains highly secure thanks to its two-step verification via SMS or PIN.
Here's a detailed comparison of the key spending limits, applicable fees, and other features of leading pay with phone providers in the UK:
| Pay by Phone Provider | Daily Limit | Monthly Limit | Payment Fees | Verification Method |
|---|---|---|---|---|
| Boku | £30 | £240 | None* | SMS or PIN |
| Fonix | £40 | £240 | None* | SMS or PIN |
| Payforit | £40 | £240 | None* | SMS |
| Siru Mobile | N/A | £500 | Variable* | SMS |
*there are no payment fees for Boku, Fonix and Payforit for making deposits, but carrier fees may apply. Siru Mobile includes payment fees as part of the total bill, which also vary depending on the carrier.
Expert Tip: Combine Pay by Phone With Other Payment methods
Claudia Hartley, Payments Expert: “Pay with phone works best as a payment solution when you combine it with other flexible options such as debit cards or e-wallets. As a deposit method, pay by phone has smaller limits that don’t make it a long-term viable solution to boost your bankroll. It’s useful if you’re in a pinch and want to quickly top up for a brief slots session or to play some poker hands.
I like to use Apple Pay as a secondary option for making larger deposits and as a withdrawal method, since this is not possible with pay via phone.”
Claiming Bonuses and Promotions at Pay by Phone Casinos
As pay by phone is only available at select licensed UK casinos, many players often wonder whether this payment method qualifies for casino bonuses. In general, there aren’t many restrictions for using Boku, Fonix, Siru Mobile and Payforit for both standard gameplay deposits and other types of bonuses.
Some operators may place limitations on pay by phone deposits due to the way in which these payments are processed. As pay by phone bill casino transactions don’t transmit standard unique banking identifiers (unlike debit cards or e-wallets), it can create technical and compliance issues related to bonus verification. In essence, there’s a chance that the casino may not be able to link a payment to a specific user, which could lead to bonus abuse for important offers such as welcome bonuses.
Our experts have tested dozens of licensed operators in the UK to see which allow deposits for bonuses through mobile billing. When in doubt, we always recommend reading through the full bonus T&Cs, as these should indicate eligible payment methods. We’ve checked 10 of our premium casino partners to see if they accept pay by phone deposits for bonuses:
| Casino | Welcome Bonus | Can You Claim with Pay by Phone? | Best Alternatives |
|---|---|---|---|
| All British Casino | 100% up to £100 + 10% Cashback | 🟢 Yes | N/A |
| Betano | Wager £20, get £50 + 100 Free Spins | 🔴 No | Apple Pay, Google Pay, Mastercard, Visa |
| Betway | 150 No Wagering Free Spins | 🔴 No | Mastercard and Visa (only debit cards allowed) |
| Duelz | 100% up to £100 + 100 Free Spins | 🟢 Yes | N/A |
| Grosvenor Casino | Wager £20, get £50 + 100 Free Spins | 🟢 Yes | N/A |
| Jackpot City | 100% up to £100 + 100 Free Spins | 🔴 No | Mastercard and Visa (only debit cards allowed) |
| Midnite | 100 No Wagering Free Spins | 🟢 Yes | N/A |
| Monopoly Casino | 30 No Wagering Free Spins | 🔴 No | Apple Pay, Google Pay, Mastercard, Visa |
| talkSPORT BET | Wager £10 + Get £50 + 100 No Wagering Free Spins | 🔴 No | Apple Pay, Google Pay, Mastercard, Visa |
| The Vic | Up to £200 + 100 Free Spins | 🟢 Yes | N/A |
Pay Via Phone vs. Other Casino Payment Methods
If you’re interested in making a deposit through your mobile phone bill, you should see how this compares to other prominent banking options available to UK players. You can check below how pay by phone stacks up against other methods in terms of withdrawal speed, general availability at casinos, and standard minimum deposit amount:
Safety, Security and Responsible Gambling When Using Pay via Phone
Pay by phone is a highly controlled and secure banking option that allows you to fund your account, but just how safe is it? Our experts have shared tips on how you can have a safe experience when you play at pay by phone bill casinos:
Network security and regulation: All pay via phone methods such as Boku, Siru Mobile, Fonix and Payforit run over your mobile network’s carrier billing system, which gives them a high degree of security. These include end-to-end encryption for data transfer and strict regulations under UK legislation in terms of transparency and billing accuracy.
Multiple layers of verification: Any payment made when you top up by phone at a casino must be verified through at least two steps, typically through a SMS code or one-time PIN. This ensures that there are no unauthorised charges and that all payments are traceable by the account holder.
Built-in spending limits: As opposed to other payment options in the UK, pay by phone has daily and monthly limits that are preset at a network level. These are designed by the regulator to reduce the risk of client overspending and impulse buying, and pair very well with responsible gambling tools available at UK casinos.
Seek independent help: Despite these preset spending limits, pay by phone is a deposit-only method which must be combined with other banking options to make withdrawals. When using multiple payment solutions, you should be vigilant about your gambling budgets and seek help if you regularly cross your limits. There are plenty of helpful resources available from independent organisations such as GamCare, GambleAware and GAMSTOP.
