Arknight fans are all familiar with one thing: Annihilation
But here is a problem (and most Arknights fans find this annoying): Arknights doesn't allow you to run the game in the background, which is to say, you cannot use your phone during this type of operation.
To clear one annihilation operation usually takes 14~20 minutes. Ugh, imagine that you cannot do anything on your phone during this time period.
Here is a way to solve this: Download and run Arknights on Wakuoo! Check this tutorial for more.
Now you can minimize Wakuoo and run Arknights in the background!