O2 Pay by Mobile Casino Deposits: Use Your O2 Phone Bill to Play Online (2025)
O2 Pay by Mobile Casino deposits allow customers in the UK to fund their accounts in seconds. Small deposits are be credited to the casino via their phone bill through the Payforit scheme. This guide explains the O2 deposit flow, limits, fees, and lists the best O2-friendly casinos for 2025.
How O2 Pay by Mobile Deposits Work
- Select “Pay by Phone” (or “Boku/Fonix”) in the cashier.
- Enter your O2 mobile number and the deposit amount.
- Reply “Y” to the O2/Boku text – or enter the one-time PIN displayed.
- Your casino balance is credited instantly; start playing.
- The charge appears on your next O2 bill or is taken from PAYG airtime.
O2 Deposit Limits & Fees
- Daily cap: £30–£40 (industry standard).
- Monthly cap: £240 total Payforit spend.
- Minimum deposit: £5–£10 (casino-specific).
- Fees: O2 adds none. Most casinos are fee-free; a minority deduct ~15 % to cover carrier costs.
Supported O2 Plans
Works on O2 Pay Monthly, Pay As You Go, and giffgaff / Tesco Mobile / Sky Mobile numbers (these MVNOs use O2’s network). As with EE Pay by Mobile deposits, PAYG users need sufficient credit; contract users must stay within O2’s default “Spend Cap” for extra charges (often £40 unless you raise or lower it in My O2).
O2 Pay by Mobile Casino Sites UK 2025
| Rank | Casino | Total Bonus | No Deposit Bonus | Terms and Conditions | Let's Play! |
|---|---|---|---|---|---|
| 1 |  Mega Riches Casino | Total Bonus £100 50 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. 18+. Gamble Responsibly. Gamb... | |
| 2 |  HotWins Casino | Total Bonus £100 25 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions New Players Only. New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies ... | |
| 3 |  Betano Casino | Total Bonus £30 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+ New Customers Only. Opt in and wager £10 on selected games within 3 days of sign up. Get 3x£10 Slot Bonu... | |
| 4 |  JeffBet Casino | Total Bonus £100 50 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions New Players Only. Wager from real balance first, contribution varies per game, selected games only. Wager ca... | |
| 5 |  Barz Casino | Total Bonus £300 50 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+. New players only. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must b... | |
| 6 |  Mr Mega Casino | Total Bonus £50 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions Terms and Conditions apply. New players only. 18+. Min deposit £10. Wagering requirement apply 35x. See full... | |
| 7 |  LeoVegas Casino | Total Bonus £0 50 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions New cust only. Opt in & deposit £10+ in 7 days & wager 1x in 7 days on any eligible casino game (excluding l... | |
| 8 |  Parimatch Casino | Total Bonus £45 60 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+ New Customers Only. Opt in, wager £10 on selected games, in 15 days. Get £15 in Bonuses (30x wagering) f... | |
| 9 |  Luckstars Casino | Total Bonus £0 500 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions New players only, £10 min fund, 65x bonus wagering requirements, max bonus conversion to real funds equal to... | |
| 10 |  Skol Casino | Total Bonus £100 100 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+. New Players only. One bonus offer per player. Minimum deposit of £10. Max bonus bet £5. This offer give... | |
| 11 |  Duelz Casino | Total Bonus £100 100 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering r... | |
| 12 |  Casushi | Total Bonus £50 50 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+. New players only. Min £10 deposit & wager. Free spins on Book of Dead (30 spins on day 1, 10 on day 2, ... | |
| 13 |  Betiton Casino | Total Bonus £0 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+, Welcome Bonus: New Players only, 1st Deposit, Min Deposit,: £15, max £10 free bet valid for 14 days, be... | |
| 14 |  Win Windsor Casino | Total Bonus £2000 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions New players only, £10 min fund, deposit matchup % credited via bonus wheel, £2,000 max bonus, 65x wagering r... | |
| 15 |  Playluck Casino | Total Bonus £100 100 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+. New Players Only. Welcome Package split over 4 deposits. Min £20. Wagering Requirement: 35x. Spins are ... | |
| 16 |  Mr Vegas Casino | Total Bonus £200 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions New players only. Mindep 10. Account balance is withdrawable at any time upon withdrawal, any remaining bonu... | |
| 17 |  Griffon Casino | Total Bonus £0 200 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 18+. New players only. Offer is valid over the first 3 deposits. 50 spins on Big Bass Bonanza upon first dep... | |
| 18 |  Neptune Play Casino | Total Bonus £100 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions Terms & Conditions +18. Terms and Conditions Apply. Min. Deposit $10. | |
| 19 |  Swift Casino | Total Bonus £50 50 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Max. Bonus £50. Maxi... | |
| 20 |  7bet Casino | Total Bonus £50 0 Free Spins | No Deposit Bonus £0 0 Free Spins | Terms and Conditions 1st deposit only | min deposit £10 | max bet £2 | max bonus £50 | 40x wagering | Bonuses playable on Casino ... |
Pro Tips for Seamless O2 Pay by Mobile Casino Deposits
If your O2 phone-bill deposit ever stalls, nine times out of ten the culprit is a simple network or account setting. It’s usually easy to fix. Check that you’re connected to mobile data, not Wi-Fi. Boku and Fonix use “header enrichment” on O2’s 4G/5G network to auto-detect your number; switching off Wi-Fi can eliminate an extra SMS step and prevent time-outs.
- Delayed SMS? Toggle airplane mode for 10 seconds to force a fresh signal, then resend the deposit.
- PAYG short of credit? Top up before the deposit attempt—O2 will reject the request if your airtime balance can’t cover the full amount.
- Still barred? Text
UNBARto21202(O2’s free shortcode) or speak to O2 Live Chat and ask to lift premium-rate restrictions. Changes apply within minutes.
Following these quick checks should ensure your O2 Pay by Mobile deposits land in your casino wallet first time, every time.
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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