The cell phone has become a basic and very popular communication tool - today it is not only used for making phone calls, but also for accessing the internet, sending text messages, and recording everything. Unfortunately, cell phones are not designed for security and privacy. Not only is it bad at protecting your communications, but it also puts you at other risk of tracking - especially location tracking. Most cell phones give less control than desktop or laptop computers; it is very difficult to change the operating system, it is difficult to investigate a malicious attack, it is difficult to remove or replace pre-installed software that you do not like, and it is difficult to prevent parties such as power companies phone monitoring of your device usage. Furthermore, the device company may declare equipment out of date and discontinue providing software updates, including security patching packages; If this happens, you will have no way to fix it. Some of these problems can be solved using third-party security software - but others are not. Here we will describe a few ways in which phones are used to aid in monitoring and undermining user privacy.