The characters still act like “ding-dongs,” but there are good laughs and clever moments throughout. For fans who grew up with Cosgrove and “iCarly,” the revival feels like catching up with a childhood friend and sharing in the challenges of adulthood, without shedding any of the humor or personality from when you first met.

STREAM IT If you grew up watching iCarly and are happy to see most of the old gang again. SKIP IT if you’re expecting the grown-up Carly and her friends to give you a more grown-up sitcom.