In simple terms iPhone slots are slots which have been optimized to run on iOS. This allows players to easily access and play the games from any mobile device powered by iOS. All you need is an internet connection and your trusted iPhone and you can start playing iPhone slots in seconds. But this wasn’t always the case. In the early days of mobile casinos iOS users simply couldn’t play the casino games, opposed to Android users. The reason for this was that iOS didn’t support flash at the time, which was needed to run the casino games. But when the HTML5 protocol was introduced this obstacle was surpassed. From there on all iOS users could easily access the casino games and give them a try for free or for real money.