220-1101 Question 29
Single answerWireless/cellular data network (enable/disable)A sales representative uses a company-issued smartphone while traveling internationally. After landing, she reports that email and cloud apps stopped working unless she connects to hotel Wi-Fi. Voice calls and text messages still work. You verify that the SIM is installed correctly and the carrier account is active. To restore mobile data service as quickly as possible, which action should the technician take FIRST?
- A
Enable cellular/mobile data in the phone's network settings
- B
Replace the SIM card with a new one from the carrier
- C
Disable Bluetooth to reduce wireless interference
- D
Forget and reconnect to the hotel Wi-Fi network
Show answer and explanation
Correct answer: A
Explanation
This question tests practical troubleshooting of a wireless/cellular data network issue in an A+ Core 1 context. When a smartphone can still place calls and send texts but cannot access internet services over the carrier network, technicians should first check whether cellular/mobile data has been disabled in settings. This is a common user- or policy-related issue and is faster and less disruptive than replacing hardware. Standard smartphone troubleshooting best practice is to verify simple configuration settings before escalating to carrier provisioning or hardware replacement. Device vendors such as Apple and Android manufacturers document mobile/cellular data as a separate setting from Wi-Fi, Bluetooth, and voice/SMS service, so enabling it is the most appropriate first step.
- A. Correct.
Correct. If voice and SMS work but apps cannot use the carrier network, a common and realistic cause is that cellular/mobile data is disabled in the device settings. Re-enabling mobile data is the fastest first troubleshooting step and directly addresses the symptom described.
- B. Incorrect.
Incorrect. A bad or unprovisioned SIM would more likely affect carrier registration more broadly, often impacting voice, SMS, and data together. Since voice calls and text messages still function and the account is active, replacing the SIM is not the best first action.
- C. Incorrect.
Incorrect. Bluetooth does not control whether the device can use the carrier's cellular data connection. Although users sometimes confuse wireless technologies, Bluetooth interference is not a typical cause of mobile data being disabled while voice and SMS remain available.
- D. Incorrect.
Incorrect. The issue occurs specifically when the user is away from Wi-Fi and trying to use the cellular network. Reconnecting to hotel Wi-Fi might restore internet access through Wi-Fi, but it does not solve the underlying problem of cellular/mobile data being disabled.