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220-1102 Practice Question: A user complains that their Android phone's…
A user complains that their Android phone's battery drains extremely fast after a recent OS update. They have already tried restarting the device. What is the most likely cause and solution?
⚠ Common exam trap
CompTIA often tests the misconception that any post-update battery drain is due to malware or a failing battery, when in fact background system processes like indexing are the most common cause.
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
✓
The device is performing background indexing; wait a day or two.
After a major OS update, Android devices often perform background indexing of files, media, and app data to optimize search and performance. This process is CPU- and I/O-intensive, causing increased battery drain for 24–48 hours. The correct solution is to wait a day or two for indexing to complete, as restarting alone does not stop this background task.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The update installed a malware app; perform a factory reset.
Why it's wrong here
Official system updates, especially from reputable manufacturers, undergo rigorous security checks to prevent the inclusion of malicious software. While not impossible, it is exceedingly rare for an official update to directly install malware that causes battery drain. Suggesting a factory reset as the immediate solution for post-update battery drain is an overreaction, as it erases all user data and settings without first exploring more common and less destructive troubleshooting steps.
- ✗
The update reset battery optimization settings; re-enable them.
Why it's wrong here
While a system update could theoretically reset some battery optimization settings, it is not the most common or immediate cause of significant battery drain directly after an update. Android's power management features are generally robust and designed to persist across updates. Furthermore, even if some settings were altered, the primary reason for post-update drain is usually background system activity rather than a complete disablement of all optimizations, making re-enabling them an incomplete solution.
- ✓
The device is performing background indexing; wait a day or two.
Why this is correct
After a major Android system update, devices often perform extensive background tasks such as re-indexing files, optimizing installed applications for the new OS version, rebuilding caches, and synchronizing data. These intensive processes utilize the CPU, storage, and network, leading to temporarily increased power consumption and noticeable battery drain. Allowing the device a day or two to complete these essential post-update operations typically resolves the issue as the system stabilizes and returns to normal power usage patterns.
- ✗
The battery is failing due to the update; replace the battery.
Why it's wrong here
A software update, by its very nature, cannot physically damage the chemical components or internal circuitry of a lithium-ion battery. Battery degradation is a physical process related to charge cycles, age, and heat exposure, not software changes. Attributing a sudden battery failure directly to a software update is a misconception, as the update only modifies the operating system's instructions, not the hardware's physical integrity. Therefore, replacing the battery is an inappropriate and premature solution for post-update battery drain.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1202 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 220-1202 exam.