A user's Android smartphone recently got a swollen battery and feels warm to the touch even when not in use. The technician checks the battery health using the built-in diagnostic tool, which reports 'Good'. The user mentions the phone was dropped onto a hardwood floor a few days ago. Which of the following is the MOST likely cause?

A

Faulty charging port: A damaged charging port might cause intermittent charging or connection issues, but it would not directly cause battery swelling or heat when the phone is not plugged in.

C

Overcharging due to third-party charger: While poor-quality chargers can overcharge and damage batteries, the user's report of a recent drop makes physical damage a more direct and likely cause.

D

Malware running in background: Malware could cause high CPU usage and battery drain, resulting in heat, but it would not cause the battery to swell. Swelling indicates a physical battery problem.

What does this 220-1101 question test?

Read the scenario before looking for a memorised answer.

What is the correct answer to this question?

The correct answer is: B — Physical impact from a drop can damage the internal structure of a lithium-ion battery, causing internal short circuits that generate heat and lead to swelling. Battery health software often relies on cycle counts and voltage readings and may not detect physical damage. A faulty charging port would not cause swelling unless it is actively charging. Overcharging is possible with a third-party charger but the drop event makes physical damage more likely. Malware can cause battery drain and heat but not physical swelling.

What should I do if I get this 220-1101 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.