Abstract: Smart cities are imperative in terms of smart buildings, transportation, parking, healthcare, agriculture, traffic systems, and public safety aided by the fifth generation (5G) computation standards. They are entirely capable of controlling real-time devices and delivering relevant smart information to the citizens. However, different architectural stages experience privacy and security concerns. Therefore, in this survey, an internet of things (IoT) based architecture is proposed, showing the critical layers that are key to ensure secure smart IoT implementation. The study further covers the recent approaches to security applications for information centric SCs. 5G security solutions have been highlighted in SCs' settings and proposed. Comparably, a comprehensive SC current 5G security and numerous open security concerns are demonstrated. Lastly, offer potential research directions and motivations mainly in academia and industry, outlining these concerns that need to be considered to enhance smart daily operations.