220-1101 Mobile Devices Practice Question
A user reports that their Android smartphone's battery drains rapidly even when the phone is idle. The technician has already checked for OS updates and verified that no obvious apps are running in the foreground. Which of the following should the technician do next to diagnose the issue? (Choose two.)
⚠ Common exam trap
The trap here is jumping to hardware replacement or drastic measures like factory reset before using built-in diagnostic tools to identify the actual cause of battery drain.
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
✓
Check for apps that have background activity or wakelock permissions enabled.
To diagnose rapid battery drain when idle, the technician should first gather data using built-in battery statistics and check for apps with background activity or wakelock permissions. These steps can pinpoint misbehaving apps or settings. Replacing the battery, disabling connectivity, or factory resetting are premature and do not diagnose the root cause.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Check for apps that have background activity or wakelock permissions enabled.
Why this is correct
Apps with background activity or wakelock permissions can prevent the phone from entering deep sleep, leading to excessive battery drain when idle. Reviewing these permissions helps identify misbehaving apps. This is a crucial step in diagnosing idle battery drain.
- ✗
Perform a factory reset to eliminate all third-party apps.
Why it's wrong here
A factory reset is a drastic measure that erases user data and should be a last resort after other diagnostics fail. It does not help identify the specific cause and may be unnecessary. The technician should first use less invasive diagnostic tools.
- ✓
Review the battery usage statistics in Settings to identify high-consumption apps.
Why this is correct
Battery usage statistics provide a breakdown of which apps and services are consuming power. This can reveal background apps or system processes that are draining the battery even when the phone is idle. This is a direct and effective diagnostic step to pinpoint the culprit.
- ✗
Replace the battery with a new one to rule out battery degradation.
Why it's wrong here
While battery degradation can cause faster drain, it is not the first step in diagnosis when the issue is sudden or severe. Replacing the battery without identifying the cause is premature and may not solve the problem if a software or app issue is responsible. Diagnostic steps should precede hardware replacement.
- ✗
Disable Wi-Fi and Bluetooth to see if the drain stops.
Why it's wrong here
Disabling Wi-Fi and Bluetooth can reduce power consumption, but it is a troubleshooting step rather than a diagnostic one. It does not identify the root cause; it only tests one potential factor. The technician should first gather data on what is consuming power before making changes.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This 220-1101 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 220-1101 exam.