If you want to play, then download it for PC.

Game is very entertaining at begin and you can clear all content with 4 starts that are very common. Unfortunately, the late game is basically a grind simulation where you just set map on auto and wait for it to finish, and you're stuck watching your phone screen for hours. 

While the game is enjoyable, the company doesn't care about playerbase outside of Asia. CN gets all the collaborations and best things, while global is completely ignored. Don't believe me? CN got cosplayers and limited banner on anniversary, while global got two cringing dudes on stream and a sign in event. Not to mention that they also talked crap about one of the most famous arknights YT channel, and official discord mod often joins trash talking. 

The community doesn't seems toxic at first sign, but god forbids if you step out of line. I played on CN servers, and got trashed multiple times for talking about strategy for one of events before it was released on global (Broken Path). Most of content of reddit is yanked from pixiv, but there is quality control and everything is well organized