The paper lists and describes possible problems in the 4G network. The aim is to present in detail the process of detecting network problems and describe them through several characteristic examples. Wireshark software is used for these processes. Also, the historical development of mobile networks is described, actually how the 4G network appeared over time. To process and solve the described problem, it is necessary to understand the network management procedure, which is also included. The following is an overview of the development of the used software tool Wireshark, its application and the numerous possibilities it provides. It also describes the detection of security irregularities and vulnerabilities, that is, how Wireshark behaves in security roles within the network. After getting acquainted with Wireshark, examples of detecting problems that may occur within the network are presented and their analysis is described. For easier tracking and understanding of the problem, the procedures are described in pictures and text, step by step. At the very end, there is a conclusion about the covered problems that extend throughout the paper, but also about the observations for the used network protocol analyzer, Wireshark.