This systematic review provides a detailed synthesis of existing research on the impact of smartphone use on cognitive processes. Adhering to the preferred reporting items for systematic reviews and meta-analyses principles, we performed a thorough search across many databases, which led to the identification of studies that satisfied our rigorous inclusion criteria. The results of our study demonstrate a notable association between the usage of smartphones and alterations in attention span, memory retrieval, and executive functioning. These findings emphasize the importance of raising awareness and implementing interventions to reduce negative cognitive effects linked to excessive smartphone usage.