Who is the girl in ATT ad?

The girl in the AT&T ads is Milana Vayntrub, an actress and comedian. She is best known for her role as Lily Adams, a saleswoman in AT&T commercials, which she has appeared in since 2013. Vayntrub's character is characterized by her relatable personality and humor, which have contributed to the popularity of the ads. Outside of her work with AT&T, she has also acted in various television shows and films.