Manjiri doesnt know Vishwa's phone??

Seems like with dragging spree CVs introducing one blooper after another. It was shown Kali by mistake drops phone in water when trying to turn it on. But I doubt Manjiri now. Doesnt she recognize her own husband's phone?? In my house i can easily spot whose phone it is just looking at outer body. What wife then Manjiri is who cant recognize husband's phone???