But what exactly are the methods, how do they work and are there any differences between those two? There are so many ways to make a deposit at an online casino these days, but did you know you can use your phone bill to enjoy a slot or two too?īoth Boku and pay by mobile casino deposit methods use your mobile phone bill to make a deposit, with charges then being paid on top of your tariff or contract, meaning you can play in just a few taps.