The Independent has compiled a list of the top 10 pay-by-phone casinos for UK customers in 2026, following thorough testing of online casinos that accept mobile deposits. Pay-by-phone casinos allow users to fund their accounts using mobile phone credit or their monthly phone bill, eliminating the need to share financial details. This method is considered secure and efficient, and all listed casinos are licensed by the UK Gambling Commission. They were evaluated based on factors like game variety, bonuses, payment options, mobile usability, and responsible gambling features. The list includes both well-known and newer online casinos, each offering different welcome bonuses and deposit methods. Top-rated casinos include Duelz, Ivy Casino, Casino Kings, MogoBet, Rose Casino, Space Wins, HotWins Casino, The Online Casino, NY Spins, and Great Britain Casino. Each was reviewed on licensing, game selection, bonuses, payment methods, withdrawal speed, mobile experience, customer support, and responsible gambling tools. Each casino offers unique promotions and deposit options. For example, Duelz gives 140 free spins for a £25 deposit, using a service called Fonix without transaction fees. Ivy Casino offers 100 free spins for £20, but only on iOS devices. Casino Kings provides a 150% welcome bonus and 75 free spins, but deposits are only available on Android. MogoBet offers a 100% matched deposit up to £50 and 20 free spins, but with a processing fee. Rose Casino provides 100 free spins for £20 with no fees, while Space Wins gives 5 no-deposit free spins and 500 with regular deposits. HotWins offers a 100% deposit match up to £150 but with a 15% fee. The Online Casino and NY Spins both offer 140 free spins for £25, with the latter allowing deposits up to £40 per transaction. Great Britain Casino gives a £50 deposit match and 50 free spins on Gates of Olympus, with no fees. While pay-by-phone deposits are processed instantly, withdrawals at these casinos cannot be done through mobile methods. Users must use alternatives like debit cards, bank transfers, PayPal, PaySafeCard, Neteller, or Skrill, each with different processing times and fees. Pay-by-phone deposits usually have limits, such as £30 per transaction or up to £240 per month. Some casinos charge small fees, typically around 15%. The Independent tested each casino by registering, verifying identity, making a deposit via phone, and playing with real money. Criteria included licensing, game variety, bonuses, payment methods, withdrawal speed, mobile experience, customer service, and responsible gambling features. All reviewed casinos are licensed by the UK Gambling Commission and have games tested by independent labs. Pay-by-phone casinos offer a wide range of slot games, including popular titles like Rich Wilde, Book of the Dead, Big Bass Bonanza, Gates of Olympus, and Sweet Bonanza, with varying return to player percentages. Alternatives to pay-by-phone include services like PayPal, Paysafecard, Neteller, Skrill, and Revolut, each with its own pros and cons. Responsible gambling tools, such as deposit limits, reality checks, time-outs, and self-exclusion through GamStop, are available on all reviewed casinos. Users are encouraged to use these tools to maintain control and ensure gambling remains a form of entertainment. Support is available from organizations like BeGambleAware or Gamcare for those needing help with gambling-related issues.