kinda late but,
1. someone else stated a while back they found the feature, but it didn't work, I believe that's because Hyao added it in but didn't fully set it up since it has no real use due to us having the history button., other than to kinda just cheat fights by resetting them.
2. I'm pretty sure it's either its exactly the same as the pc one or the bugs in pc weren't in android so they didn't need to update it for a bug android didn't have, or it's taking a minute since it's not Hyao who does the android version.
and third I bet Hyao appreciates the compliments!