Typically involves diagnosing and resolving hardware and software issues. This can include anything from replacing a broken screen to resetting the operating system. In some cases, repair technicians may need to replace entire components of the phone, such as the motherboard or battery. Repair technicians may also need to troubleshoot and repair any problems with the phone’s network connection or other hardware components. Depending on the type of phone, repair technicians may need to use specialized tools and equipment to complete the job.