Question 9
- A faulty LCD of a mobile phone was replaced with a new one yet the phone would not display. State three reasons that could be responsible for this:
- A mobile phone was discovered to be freezing frequently while in use. Give three reasons for this problem.
Observation
Candidates that attempted this question demonstrated little troubleshooting technique. They did not perform too well on the question
The expected answers are:
-
Reasons LCD will not display
- LCD not properly fixed
- Phone requires general servicing
- LCD IC on the PCB is bad
- New LCD is also bad
- New LCD not compatible with the phone
-
Reasons for frequent freezing of mobile phones
- Issues with memory card
- Running too many applications at the same time
- Low internal memory storage
- Virus attack
- Bugs from updates / corrupt operating system
- Too many installed applications
- Broken LCD
- Outdated operating system
- Overheating arising from internal hardware fault