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 Radio Silence is a story with many layers to it. You're initially lead to believe it's a story about a girl who gets to work on her favourite podcast, which is (secretly) ran by the boy who lives across from her. But the story goes much deeper than that. 
 A big part of the story is child abuse. Aled deals with it a lot, in a more emotional sense. He's put himself under a lot of pressure to get into university and also wants to keep his podcast a secret. The only person who knew was his best friend/sort of boyfriend, Daniel. So Frances figuring out it's him was hard on him but also lead to them developing a close friendship. Friendships between male and female characters in YA are rare and this book makes a point that they're friends. It does subtly flip tropes on its head, as in most YA the book would've ended with them as a couple. Instead, Aled has a relationship with Daniel, and is demisexual, while Frances had a crush on his twin sister, Carys. Carys herself is missing and this is connected to the abuse she faced from her mother. 
 This book also had a unique aspect to it, that being telling the reader it's okay if they don't get into, or even want to go to, university. It doesn't hammer in that uni's worthless, more so that if you don't want to go, then you don't have to. Especially since it lead to multiple character's stress. That's a unique message you don't see but is a very important one. 
 Frances also has a close relationship with her mother. Parents are another thing ignored in YA but her mother was very present throughout the book. Although her father isn't part of the book at all. 
 Overall, Radio Silence is a book that hooks you right in, with intriguing characters and a compelling storyline.