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

- Aging of the battery

- Bad reception

What are signs of poor battery health?

Device might be damaged and needs to be replaced

What should you do if your phone battery swells up?

Backup the system

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

- 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?

- Throughput interference

- WIFI has a limited range

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

- 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?

- 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?

Reset or restart your device through the documentation of your device

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

Replace the system board because the port is usually not modular

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

- 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?

- 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?

- Not enough space

- Network connectivity issues

- OS or app is incompatible

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

- Power issues

- Bluetooth connectivity issues

- Hardware issues

Why might the phone stylus not work?

- Outdated OS and app software

- Low storage

- Hardware issues

- Excessive background apps

- Outdated hardware

What are some reasons for degraded performance?