220-1101 Mobile Devices Practice Question
A user reports that their smartphone is running very slowly and the battery drains significantly faster than usual, even when the screen is off. The technician notices that the phone feels warm to the touch. Which of the following is the MOST likely cause of these symptoms?
⚠ Common exam trap
The trap here is that candidates often associate heat and battery drain with a failing battery, but the combination of heat, slowness, and drain with the screen off points to software (background processes) rather than hardware failure.
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
✓
Too many apps are running in the background.
When a smartphone feels warm, runs slowly, and drains battery quickly even with the screen off, the most likely cause is excessive background app activity. Background apps consume CPU cycles and keep the processor active, generating heat and draining the battery. This is a classic symptom of runaway background processes rather than a hardware failure or simple settings issue.
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 screen brightness is set too high.
Why it's wrong here
A high screen brightness setting can drain the battery faster, but it would not cause system slowness or warmth when the screen is off. The phone being warm even with the screen off points to background processing, not display activity.
- ✓
Too many apps are running in the background.
Why this is correct
Background apps can continuously use CPU cycles, causing the processor to work harder, which leads to heat, battery drain, and reduced responsiveness. This is a common issue on smartphones, especially if apps have bugs or are not properly optimized.
- ✗
The operating system needs to be updated.
Why it's wrong here
While an outdated OS can sometimes cause performance issues, it typically does not cause the phone to become warm or drain the battery as dramatically as described. OS updates usually fix bugs but are not the primary suspect when background apps are the likely cause.
- ✗
The battery is failing and needs to be replaced.
Why it's wrong here
A failing battery can cause rapid discharge and may generate heat, but it does not cause the phone to run slowly overall. Slowness is a symptom of CPU overload, not battery degradation. Additionally, a bad battery often leads to unexpected shutdowns or swelling, which are not reported here.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.