We see what bonuses are on offer and read the terms and conditions to make sure they’re actually attainable. Bonus offers and rewards - Casinos must offer sign-up bonuses, free spins bonuses, reload bonuses, and promotions with fair wagering requirements.We also evaluate the efficiency of customer support and make sure they’re easily contactable and provide fast response times. Safety and customer support - Security systems, official licensing, and game regulation are essential to ensure the safety and fairness of an online casino.A good online casino should have hundreds of high-quality games, with a great selection of slots from reputable software developers, like Microgaming, NetEnt, WMS, IGT, and many more. Game selection - We assess the range of classic and video slots, video poker, table games, craps, and live casino games.Of course, mobile compatibility is the most important part, but there are a number of other factors we take into account, which are detailed below. How do we come up with our list of the best casinos for iPhone users? Our reviewers search far and wide for the best casinos for iPhones and judge them on specific criteria.