This will result in two accounts got banned if you got detected. The game is also sending your deviceID to server so regardless of you use it or not, you will get banned.
In the end, you can't just say "It's always there but I swear I don't use it at all".
That's for actual players :( I just want to collect everything and leave the account there for actual playing later so no awakening, transcending or everything.
My friend used mod then stopped for a week after he survived the last ban wave. He bought 25K rubies waiting for Lewsia, Priscilla and Ricardo. The minute after maintenance, he found out he was banned. No refund. Nothing. Even Google didn't reply back.
So if you are using mod, don't spend any...
I created a clone on Tuesday (QueenSelen*** on ban list today if you want to check) and only did until chapter 2 normal with 4 starters. No ToC. Nothing else. And still get banned after maintenance. I use the no enemies mod. Guess they have raised the bar now so everyone, be mindful.
The battle is offline until it finishes. Then the result will be sent to server which is controlled and monitored by Vespa. So unless you don't finish the battle, they have the log already. Remember the statistic screen? Yeah.