Unity Succubus Reborn [v20250429a] [Sda-lab]

[Gadriel]

I guess both phones have the same description and the same line of "When this card leaves the field the equipped squeezer returns to its original owners control" and i guess ownership of the phones gets replaced when other phone kicks in idk

The keyword here is 'original'. If you Hypnophoned a Squeezer, the opponent hypnophoned them back, and then you Knockoff Phoned them... they'd still go back to the other side when the knockoff expired, because the card Originally belonged to the opponent.
...I think the game's coded so 'Stolen Cards' drawn from the opponent's deck also do this, and know for a fact Swapped and Gifted cards do so.

 

[JDog5731]

yeah that sounds about right
So you can counter Insincere Gift, 5 cost phone and Swap with a Knockooff phone, thats good to know, i did try out of curiosity and yeah they go to their original owner once the knockoff phone ends