Troubleshooting Mobile Devices - CompTIA A+ 220-1201 - 5.4

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Last updated 3:55 AM on 1/31/26
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14 Terms

1
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- Aging of the battery

- Bad reception

What are signs of poor battery health?

2
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Device might be damaged and needs to be replaced

What should you do if your phone battery swells up?

3
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Backup the system

What should you do first if your screen is damaged before replacing it?

4
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- Check everything in the charging process

- Check the cable interface

- Check the cable

- Verify the power adapter

What should you do if your phone is having problems charging?

5
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- Throughput interference

- WIFI has a limited range

What are some reasons to have poor or no Wi-Fi or cellular connectivity?

6
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- Power down the phone

- Remove the case, cards, back, and battery

- Use the silicone packets if necessary

What should you do if your phone is damaged by liquid?

7
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- Phone gets warm and automatically shuts down

- Charging/discharging the battery, CPU usage, and display light can overheat the battery

What are the signs and causes for phones to overheat?

8
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Reset or restart your device through the documentation of your device

What is the main thing you do if your experiencing digitizer issues?

9
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Replace the system board because the port is usually not modular

What should you do if your charging port is damaged and why?

10
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- Unusual apps

- Large data transfers

- Pop up messages

- High CPU usage, device overheating

- Excessive battery use

What are some symptoms for malware on your phone?

11
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- Use a touch calibration app

- May be a hardware issue and you'll have to replace the entire display

What should you do if you're experiencing a cursor drift?

12
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- Not enough space

- Network connectivity issues

- OS or app is incompatible

Why might your phone not be able to install new applications?

13
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- Power issues

- Bluetooth connectivity issues

- Hardware issues

Why might the phone stylus not work?

14
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- Outdated OS and app software

- Low storage

- Hardware issues

- Excessive background apps

- Outdated hardware

What are some reasons for degraded performance?