Siru Mobile Casino UK Deposits
Siru Mobile casino deposits allow players in the UK to fund their casino account with a phone bill. This guide explains exactly how Siru works, what limits and fees apply, and how it stacks up against the better-known Boku and Fonix options.
What Is Siru Mobile?
Launched in Finland in 2011, Siru Mobile entered the UK market in 2017 with FCA permission to operate “payment initiation” via carrier billing. The company partners directly with EE, O2, Vodafone, and Three, plus major MVNOs, to route small pay by mobile casino transactions through your phone bill. While Boku relies on SMS confirmation, Siru’s signature move is the one-ring callback: after you enter your number, Siru places an automated call that disconnects immediately; answering (or simply letting it ring) confirms the charge.
How Siru Mobile Casino Deposits Work: Step by Step
- Select “Siru Mobile” in the casino cashier.
- Enter your mobile number and the deposit amount (£1 – £30).
- Receive an instant call from a UK shortcode; answer or let it ring out – that’s the confirmation.
- Deposit credits instantly; funds appear in your casino balance.
- Charge shows on your phone bill (or is deducted from PAYG credit).
Siru Mobile Casino Limits & Fees
- Minimum deposit limit: £1 (industry-lowest).
- Maximum single deposit limit: £30.
- Daily cap: £30; monthly: £240 (PSA standard).
- Typical fees and surcharge: flat £1 or 15 % — because Siru’s commission to casinos hovers around 15 %. Many operators offset this by passing on a visible fee.
Unlike Boku or Fonix, Siru was built for micro-payments first, which is why you’ll see ultra-low minimum stakes (as little as £1) and a slightly different confirmation flow.
How Siru Mobile Deposits Work
- Pick a Siru-Ready Casino – choose a UK-licensed online casino that offers Siru Mobile.
- Enter Deposit Amount – select Siru, type the amount you want to load (usually a £10 minimum).
- Provide Your Mobile Number – enter a UK mobile number tied to your contract or prepaid SIM.
- Confirm by SMS or Call – Siru sends a one-time code or automated voice call; enter the code to approve.
- Funds Arrive Instantly – the money appears in your casino balance right away.
- Pay Later or Immediately – contract users see the charge on their next bill; prepaid users have it deducted instantly.
Key Details & Limits
| Feature | Siru Mobile Terms (UK) |
|---|---|
| Deposit Method | Added to phone bill / deducted from prepaid credit |
| Minimum Deposit | ≈ £10 |
| Daily / Monthly Limits | Up to £40 per day & £240 per month |
| Withdrawals | Not supported – cash out via bank transfer or e-wallets (Skrill, Neteller, etc.) |
| Security | SSL-encrypted connection & two-factor SMS/voice verification |
| Bonus Eligibility | Usually qualifies for welcome and reload bonuses |
| Supported Countries | UK, Finland, Sweden, Norway |
| Mobile Friendly | Designed for seamless use on any smartphone |
Benefits of Siru pay by phone bill deposits
- No banking details shared with the casino.
- Deposit confirmed in seconds; funds available immediately.
- Two-step verification secures every transaction.
- Built-in Siru limits help manage spending.
- Accepted at an increasing number of UK online casinos.
Limitations of Siru pay by phone bill deposits
- Siru cannot be used for withdrawals.
- Daily/monthly limits may not suit high-rollers.
- A few casinos may add a small processing fee.
Supported Siru pay by mobile casino networks
EE, O2, Vodafone, Three, plus MVNOs such as Giffgaff, Tesco Mobile, Sky Mobile, Smarty, VOXI, and ID Mobile. Contract users must have premium billing enabled; PAYG customers need enough airtime to cover both deposit + fee.
Pros and Cons table of Siru vs Boku and Fonix
| Feature | Siru Mobile | Boku | Fonix |
|---|---|---|---|
| Min. deposit | £1 | £5-£10 | £5-£10 |
| Confirmation | Instant phone call (no SMS) | SMS “Y” reply or PIN | SMS or browser PIN |
| Typical fee | Flat £1 / 15 % | Usually zero | Usually zero |
| Deposit speed | Instant | Instant | Instant |
| Ideal use-case | Ultra-small stakes, testing a new casino | Standard £10-£30 top-ups | Higher daily cap (£40) at some sites |
Key Takeaways
- Siru Mobile offers the UK’s lowest minimum stakes (£1) for pay-by-phone deposits.
- Expect a flat £1 or ~15 % fee at most casinos – higher than Boku/Fonix.
- The signature “one-ring” call confirmation skips SMS and works even with poor text delivery.
- Ideal for micro-testing a new site or casual spins; less suited to sustained high-volume play.
If encountering any issues when making a Siru pay by mobile deposit, refer to our complete Troubleshooting Guide.
Summary table of Siru pay by phone bill casino deposits
| Aspect | Pay-by-Mobile Casino Fees (UK) |
|---|---|
| Why fees exist | Carriers charge casinos ≈ 10 – 15 % commission for fronting the deposit; operators either absorb, add a flat surcharge, or credit you less. |
| How often you pay | Most UK casinos absorb the fee (player sees £0). A minority add £1 flat or deduct ~15 % from the credited amount. |
| Typical fee models |
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| Provider cost snapshot |
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| Key warning signs |
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| How to minimise fees |
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| Key takeaways | Carrier fees average 10–15 %; Boku & Fonix deposits are usually fee-free, Siru and PayviaPhone often aren’t. Always read cashier previews and bonus terms to avoid surprise deductions. |
Siru Mobile Casino Payments FAQs
Chris Vaughan is a Senior Writer and Editor at GamblingAuthority. He has more than 18 years of experience in the iGaming industry and has great knowledge of game developers, trending games and casino research.
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