You will need to pick out your own SIM CARD. GPS tracker can be firmly attached to any metal location without worrying about falling. Apart from that, the body of the mini makes it easy to hide. You can put it in a child's school bag, in an elderly person's pocket, and in a safe or bag with valuables. More uses are waiting for you to discover. 【Remote Control by Phone】When you insert SIM and TF card for this GPS tracker, you only need a mobile phone to control it. Send different codes to perform different instructions, such as sending positioning tracks, querying the location in real time, etc. And in the process of mobile phone control, the tracker will not emit any sound and light. This means that no one can easily find it. 【Multifunctional GPS Tracker】It can provide you with many useful functions. For example to call back. When you send the code to the tracker, the tracker will call back. This way you can see what's going on around you. And real-time location queries—Send the corresponding code to the tracker and your phone will receive a link showing the details. 【Long-Time Working】This GPS tracker has a long-life battery. When fully charged, it can stand by for 12 days. Under working conditions, it can be maintained for 4-6 days. Note: The package does not contain a Sim card