**Abstract**

This theme addresses information security in mobile operating systems: Android and iOS, compare vulnerabilities, and propose security policies, the methodology is qualitative based on bibliographic reference, documentary, and quantitative techniques, which allowed to evaluate the study in detail, the data collected in a systematic way, investigating security measures in mobile phones. It was performed the search to Google Academic® and the Portal de Periódicos Capes. As for the data analysis, it was done in a descriptive way. However, it was concluded that the iOS system presents greater information security compared to Android. Virus infections are not of concern at the moment, but other cyber attacks, spywares capture confidential information by taking to the remote server. The attacks can be identified by the victims online, in industrial, and by targeting them individually. Android and iOS operating systems are preferred by cybercriminals. As for cyber attacks, social networks are the focus. For security policies, we propose preventive, detective, and corrective measures, assign difficult passwords, use modern WPA encryption, Noroot firewall, the Privacy Badger tool for blocking websites, Panopticlick for test web, VeraCrypt to encrypt documents, and the Signal app that encrypts calls.

**Keywords:** information security, operating systems, mobile telephony, Android, iOS
