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220-1201 Practice Question: A customer brings in a smartphone with a broken…
A customer brings in a smartphone with a broken charging port. They want the port replaced. During disassembly, the technician finds that the charging port is soldered directly to the main board. Which tool is essential for this repair?
⚠ Common exam trap
Many exam-takers confuse a heat gun (used for rework of large ICs) with the tool needed for a small soldered component, overlooking the need for precision soldering on a main board.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A soldering iron with a fine tip.
The charging port is soldered directly to the main board, requiring a soldering iron with a fine tip to precisely heat and remove the existing solder joints and then re-solder the new port without damaging nearby components. A fine tip allows controlled heat application on small surface-mount pads, which is essential for this type of micro-soldering repair.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A heat gun with a narrow nozzle.
Why it's wrong here
A heat gun with a narrow nozzle delivers broad, high-temperature airflow, making it suitable for reflowing Ball Grid Array (BGA) chips or removing larger components. However, it is entirely inappropriate for desoldering a small, multi-pin charging port on a smartphone. The concentrated heat, even from a narrow nozzle, would likely damage adjacent delicate components, melt plastic parts, or delaminate the printed circuit board (PCB) due to excessive thermal stress, making precise removal impossible and risking irreversible board damage.
- ✓
A soldering iron with a fine tip.
Why this is correct
A soldering iron equipped with a fine, pointed tip is the precise and correct tool for both desoldering and soldering small, surface-mount components like a smartphone charging port. This tip allows for highly accurate application of heat to individual solder pads and pins, minimizing the risk of accidental contact with adjacent components or overheating the delicate traces on the printed circuit board (PCB). It provides the necessary control for intricate rework on compact electronics.
- ✗
A Phillips-head screwdriver.
Why it's wrong here
A Phillips-head screwdriver is a mechanical tool specifically designed for fastening or unfastening screws with a matching Phillips-head drive. Its primary function is the assembly and disassembly of components held together by screws, such as device casings or internal brackets. It has no utility for manipulating solder joints, applying heat, or physically removing a soldered component like a charging port, rendering it completely irrelevant for any soldering or desoldering task.
- ✗
A plastic spudger.
Why it's wrong here
A plastic spudger is a non-conductive, anti-static tool primarily utilized for prying open device enclosures, disconnecting delicate ribbon cables, or manipulating small, non-soldered components without causing scratches or electrical shorts. Its plastic construction means it cannot conduct heat for desoldering, nor does it possess the necessary rigidity or shape to manipulate solder joints. It is designed for gentle mechanical separation and delicate handling, not for thermal rework or component removal from a soldered connection.
Go deeper
Related to this question
Learn chapter
Laptop Hardware and Components
Key term
Mount
Mounting is the process of making a file system or storage device accessible to a computer's operating system by attaching it to a specific directory in the existing directory tree.
Key term
Smartphone
A smartphone is a handheld mobile device that combines cellular communication with computing capabilities, running an operating system that supports third-party applications, internet connectivity, and a touchscreen interface.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1201 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1201 exam.