28 Questions
What issues can arise if there are problems with the cellular modem in a smartphone?
Inability to make phone calls, send text messages, or receive mobile data
What should be verified in the settings if there are cellular connectivity issues?
Cellular modem status and correct settings
What should be ensured when traveling outside the normal home or office environment to maintain cellular communications?
Roaming is enabled
What action may be necessary if there's a cellular tower issue in the area?
Manually choose a tower for the cellular provider
What is the primary purpose of near-field communication (NFC)?
To enable contactless payments and data transfer within a short distance
What should you verify if you are experiencing issues with NFC?
Check if airplane mode is not activated
How does AirDrop work for file transfers between Apple devices?
Over a Bluetooth connection
What is the recommended security practice for AirDrop and Nearby Share?
Limiting the recipients who can send and receive data
What is the distance range for NFC operation?
A couple of inches
What is the potential consequence of setting AirDrop to receive files from everybody?
Increased security risk
What is the impact of activating airplane mode on NFC capabilities?
It can turn off NFC capabilities
What is the primary function of Nearby Share in Android devices?
To enable file transfers within close proximity
What is the recommended approach if you're having issues with AirDrop or Nearby Share?
Verify that the sender is listed in the recipient's contact list
How does the distance between the reader and the device affect the performance of NFC?
The closer, the better the NFC performance
What should you do if you're still having Bluetooth issues after reestablishing the handshake?
Forget the connection and re-pair with the device
What is the range within which AirDrop and Nearby Share typically operate using Bluetooth?
10 to 30 feet
What can affect cellular connectivity in the aftermath of a natural disaster?
Tower damage
What can disable cellular modem and affect cellular connectivity?
Airplane mode
What provides Wi-Fi connectivity in mobile devices?
802.11 wireless card
Do Wi-Fi cards in newer devices remain enabled in airplane mode?
Yes
What can cause Wi-Fi card malfunction in a mobile device?
Damage to embedded Wi-Fi card antennas
Compared to desktop or laptop computers, how strong are mobile device Wi-Fi signals?
Weaker
What weakens Wi-Fi signal to save battery life?
Low battery
What blocks Wi-Fi signals more than drywall?
Concrete walls
What reduces Wi-Fi signal distance on smartphones?
Thick protective cases
What is involved in proper Wi-Fi configuration?
Selecting the right SSID, encryption, and frequency
What is the coverage area for Bluetooth?
Shorter, around 10-30 feet
What is involved in troubleshooting Bluetooth connectivity?
Reducing distance between devices and re-pairing devices
Study Notes
Troubleshooting Mobile Device Connectivity
- After natural disasters, selecting a different cellular tower may be necessary due to tower damage
- Airplane mode can disable cellular modem, affecting cellular connectivity
- Wi-Fi connectivity is provided by an 802.11 wireless card in mobile devices
- Wi-Fi cards in newer devices remain enabled in airplane mode
- Damage to embedded Wi-Fi card antennas can cause Wi-Fi card malfunction
- Mobile device Wi-Fi signals are weaker than those of desktop or laptop computers
- Low battery weakens Wi-Fi signal to save battery life
- Concrete walls block Wi-Fi signals more than drywall
- Thick protective cases on smartphones reduce Wi-Fi signal distance
- Proper Wi-Fi configuration involves selecting the right SSID, encryption, and frequency
- For Bluetooth, coverage area is shorter, around 10-30 feet
- Troubleshooting Bluetooth involves reducing distance between devices and re-pairing devices
Test your knowledge of troubleshooting mobile device connectivity with this quiz. Learn about common issues affecting cellular and Wi-Fi connectivity, as well as tips for troubleshooting Bluetooth problems.
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