Alu, S.E.Ogah, Muhammad UsmanYakubu, Awal J.2023-12-142023-12-142022-03-03Ogah, M.U. et.al. (2022). Towards An Enhanced Smartphone Security Using Distributed Ledger Technology (Blockchain)https://keffi.nsuk.edu.ng/handle/20.500.14448/5597Smartphones have now become an important tool in our daily lives, even to the level of addiction for some individuals. Due to the increase in the usage of cell phones, security issue has become a major challenge in mobile transactions. In this paper, smartphone security/vulnerabilities, and awareness on data security challenges were discussed. Due to big data and massive usage of online data, security implementation in cellphones cannot be under-estimated. However, diverse data protective measures such as fingerprint sensors, Face ID, iris scanner for cellphones and biometric security features, smartphones have existed but could not provide adequate mitigate against any security breach. As a result, smartphone producers encourage their users to safeguard their devices with strong passwords. However, with all of this security counter measures, loopholes still plague the mobile phones such that antivirus software are inadequate in protecting phone users against cyber-attacks. Blockchain is an alternative that evolve to boost the security of transactions using smartphones to clamp down on any possibility of external breach. This paper also expound the use of visual sim technology other than the existing physical Sim cards in providing more security enhancement in smartphones.enBlockchain, Smartphones, Threats, Security, Visual Sim technology.Article