Did you mean Black Friday ? Cyber Monday perhaps ?
...or Black Phone With Logo Of News Media Bloomberg On The Screen Editorial Image

Black phone box on Euston Road in London, UK.

Woman walks past black phone box on Euston Road in London, UK.

Uber Eats app on a black phone with white texture background

Uber Eats app on a black phone with white texture background

Zomato app displayed a black phone on a dark texture - food delivery app

Black phone on wood