Biphonal-someone who can use an android or iphone

The iPhone's biggest competitor, the biPhone can do everything the iPhone does, but both ways. Instead of the old boring way of calling someone, you can talk and listen at the same time without pausing to do one at a time. It contains two screens, two microphones, two speakers, twice the amount of apps, and two processors. The biPhone can do multitasking, doing two apps at once. Another feature contains calling or text messaging two contacts at once.

To use two iPhones at once.

it means when your bisexual but havent fucked both of genders
so people say bi
or biphoneable