UK players have moved from using phone bill deposits, which often had limits...

https://wiki-cafe.win/index.php/What_Should_I_Look_for_If_I_Care_Most_About_Speed_on_Mobile%3F

UK players have moved from using phone bill deposits, which often had limits like £30 per transaction, to faster, more convenient options. Modern methods like Faster Payments allow deposits as low as £10, clearing almost instantly