At present, there were some formal mobile phone typing part-time apps on the market, but whether they were legal and credible needed to be evaluated according to the specific situation. Some official or unofficial part-time typing platforms may provide a certain amount of remuneration, but there may also be some risks such as being cheated or having personal information stolen. Therefore, when choosing such part-time jobs, it is recommended to carefully understand the background and reputation of the platform and pay attention to protecting personal privacy and property security. In order to avoid scams, it is best to communicate with the other party when choosing a part-time job to ensure that the other party can provide legal services and reasonable remuneration. At the same time, sign a contract or pay a certain deposit.