Remember the old days, when people had to call each other on phones attached to the wall? This genial comedy, set in 1995, exudes a warm nostalgia for its era, which is defined onscreen mainly through its clunky technology: the young protagonist (Jenny Slate) and her school-age sister (Abby Quinn) learn that their father (John Turturro) is cheating on their mother (Edie Falco) when they find his illicit love letters on a floppy disk. The movie reunites Slate, screenwriter Elisabeth Holm, and director Gillian Robespierre of the cult hit Obvious Child (2014), sort of a pro-choice romantic comedy; like that movie, this one benefits from Slate’s ample charm and comic timing, though they’ve been funneled into a more conventional coming-of-age story. With Jay Duplass.