220-1102 Mobile OS and App Troubleshooting Practice Question
This 220-1202 practice question tests your understanding of mobile os and app troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user reports that their Android phone's battery drains rapidly after a recent app update. They have already tried restarting the device. Which of the following should a technician recommend FIRST to diagnose the issue?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Check battery usage in Settings to identify the app consuming the most power.
Option B is correct because the first step in diagnosing rapid battery drain after an app update is to use the built-in battery usage tool in Android Settings. This tool provides a per-app breakdown of power consumption, allowing the technician to identify which specific app is consuming excessive energy without making invasive changes. Restarting the device already failed to resolve the issue, so checking battery stats is the logical next step before any destructive or restrictive actions.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Perform a factory reset.
Why it's wrong here
A factory reset is too drastic and should be a last resort, as it erases all data and settings without first identifying the cause.
✓
Check battery usage in Settings to identify the app consuming the most power.
Why this is correct
Battery usage statistics show which app or service is draining the battery, making this the logical first step in troubleshooting.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Replace the battery immediately.
Why it's wrong here
Replacing the battery is premature without confirming the battery is faulty; the issue may be software-related.
✗
Disable all background data.
Why it's wrong here
Disabling all background data is a broad solution that may disrupt functionality and does not directly identify the problematic app.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the principle of 'least invasive first' in troubleshooting, and the trap here is that candidates may jump to a factory reset (Option A) as a quick fix, overlooking the simple diagnostic step of checking battery usage statistics that directly pinpoints the problematic app.
Detailed technical explanation
How to think about this question
Android's battery usage statistics are derived from the kernel's power profile, which maps hardware components (CPU, radio, display) to estimated milliampere-hours (mAh) consumed per app. The 'Battery' section in Settings uses the `dumpsys batterystats` command under the hood to aggregate this data, showing both foreground and background consumption. In a real-world scenario, a poorly optimized app update might introduce a wakelock bug that prevents the device from entering deep sleep (Doze mode), causing the battery to drain even when the screen is off—this would be clearly visible in the per-app breakdown.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 220-1202 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1202 question in full detail.
Mobile OS and App Troubleshooting — This question tests Mobile OS and App Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Check battery usage in Settings to identify the app consuming the most power. — Option B is correct because the first step in diagnosing rapid battery drain after an app update is to use the built-in battery usage tool in Android Settings. This tool provides a per-app breakdown of power consumption, allowing the technician to identify which specific app is consuming excessive energy without making invasive changes. Restarting the device already failed to resolve the issue, so checking battery stats is the logical next step before any destructive or restrictive actions.
What should I do if I get this 220-1202 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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