In the update, Bandai Namco apologized for the inconvenience, but it didn't explain why it's removing the game. We've reached out to the publisher to learn more, but we suspect the move has something to do with the mixed reception the iOS version received.
The app currently has a three-star review score on iTunes, and while some customers are clearly enjoying the game, others are frustrated with its monetizing system. While the free-to-play iOS port of the SNES RPG retains the core story and battle system, it ramps up the difficulty level with in-app purchases in mind.
A review from alex_tang2256 reads, "I love the Tales series and all, but this game is terrible for making players need to pay for things. The bosses are overly difficult and they are impossible to beat without using your entire inventory, and most of the time you still die."
Those thoughts are echoed in Touch Arcade's own review: "The whole monetization into oblivion is pretty upsetting, particularly when you keep in mind that fans of JRPGs on iOS are certainly used to paying premium prices for games, and would likely do so happily for a title of Tales of Phantasia's fame. On another level, it's also very frustrating for Tales fans, because this is only the second English version of the game, and it's inexplicably worse to play than the already-terrible version that was released before on GBA."