A phone shows 'No Service' after travel. What is the first mobile-specific step?
Multiple choice — select one answer
Answer choices
Architectural breakdown & explanation
Airplane mode resets the cellular radio registration.
Correct answer(s): a. Toggle airplane mode or reseat SIM
Exam domain: Domain 1: Mobile Devices (15% weight on the official guide).
Official documentation & study links
Practice this certification
This page is one question from the CompTIA A+ bank. Run a full timed practice exam with domain-weighted random questions in your browser.