What happens if a phone calls if it is being repaired?

According to my personal experience, it is necessary to turn off the mobile phone and remove the mobile phone card when repairing the mobile phone. At this time, the phone can't come in and can't be answered. In some cases, the battery will be removed so that the mobile phone can't get in.

Mobile phone maintenance refers to a technical service for mobile phone maintenance, aiming at ensuring the normal working state of mobile phones and maintaining the normal privacy of users. Mobile phone maintenance is a professional service, involving professional knowledge, work experience and professional technology, especially the processing ability of mobile phone software and hardware. Technical service personnel need to fully understand the working conditions of mobile phones, not only pay attention to the installation of mobile phone hardware, but also pay attention to the application of software, in order to realize the normal work of mobile phones.