A mobile phone user in your company is experiencing dropped phone calls. While interviewing the user, you determine the problem started after she checked her email this morning. No other mobile devices in the organization are dropping calls.

Which of the following is the most likely reason for the dropped calls? A. Cellular service is weak in the office building. B. Malware is interfering with the calls. C. The user is connected to an unauthorized Wi-Fi network. D. The user has exceeded the limit on her data plan.

The answer is "Option B".

Explanation:

A drop in call occurs when your device becomes somehow disconnected from both the network. It generally happens due to weak cell signal and where you are allowing the contact to drop. The malware dispatches a text or call, it also removes the system notifications from both the computer and extracts all text or call from system logs. All incoming calls from such numbers will be ignored and shut down, wrong choices can be described as follows:

In option A, It is not correct because except for one phone all the phone is working properly. Option C and Option D both are wrong because the Wi-Fi network a not provide any incoming calls.