Yes, you can play PokerStars on mobile, but only via the dedicated iOS or Android app. It is not possible to play PokerStars on mobile without downloading the correct mobile poker app for your device. Is the PokerStars mobile app safe? The PokerStars mobile app is 100% safe.
PokerStars real money is 100% legit. PokerStars has been an industry leader since its launch in 2001. You do not stay as the number one online poker site for more than two decades if you are not legitimate!