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220-1101 · Question #330
220-1101 Question #330: Real Exam Question with Answer & Explanation
The correct answer is C: Liquid crystal display. Discoloration on a cell phone screen is most commonly caused by damage or malfunction of the Liquid Crystal Display (LCD) itself.
Mobile devices
Question
A customer's cell phone screen is discolored in several areas. Which of the following components is the MOST likely cause of the issue?
Options
- ABulging battery
- BWired connectors
- CLiquid crystal display
- DPhone case
- EProtective glass
Explanation
Discoloration on a cell phone screen is most commonly caused by damage or malfunction of the Liquid Crystal Display (LCD) itself.
Common mistakes.
- A. A bulging battery can cause screen distortion or physical damage due to pressure, but it typically doesn't directly cause localized discoloration of the display itself.
- B. Wired connectors connect the display to the main board; issues with these usually result in no display, flickering, or complete loss of function, not typically localized discoloration.
- D. A phone case is an external accessory and cannot cause discoloration on the screen itself.
- E. Protective glass is the outermost layer and while it can crack, it does not cause discoloration of the underlying display image.
Concept tested. Mobile device display component diagnosis
Topics
#Mobile device troubleshooting#Display issues#LCD#Component failure
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