In today's digital wave, 5G is like a powerful force, deeply reshaping the field of mobile payments and mobile devices. This article focuses on this cutting-edge change, and deeply analyzes how 5G, with its ultra-high speed and low latency characteristics, allows mobile payments to say goodbye to lag and close in seconds, while protecting transaction security with multiple encryptions, and giving birth to a new form of diversified payment; on the mobile device side, witness how 5G promotes smartphone downloads, multi-device intelligent linkage, and unlocks the unlimited potential of innovative designs such as folding screens, and invites you to explore the convenient and intelligent new world enabled by 5G.