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Question 10
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QUESTION 10
- (a) Explain the term jumper as used in mobile phone repairs.
- (b) List four causes of insert SIM problem displayed on the screen of a typical faulty phone
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This was another least popular question among the candidates. Performance was poor. This must be due to the fact that candidates are not exposed to enough practical activities.
The expected answers are:
(a) A jumper is a short length of conductor/wire used to bridge a gap/by pass of an electrical circuit.
(b) Insert SIM
Any correct 4
e.g. - Bad SIM IC
- Phone dropped into liquids (e.g. water)
- Bad SIM bed
- Bad SIM card
- Broken line bus
- Bad component(s) serving SIM IC |
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