220-1101 • Practice Test 45
Free 220-1101 practice test — 15 questions with explanations. Set 45. No signup required.
A user's smartphone is unable to make or receive calls. The device shows full signal bars but when attempting to place a call, it immediately ends. The technician checks airplane mode and it is off. Which of the following should the technician check FIRST?
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15 questions · instant feedback and full explanations after every question.