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Coverage (telecommunication)
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<h2 id="coverage-noticer">Coverage noticer</h2> <p>A coverage noticer is a device that beeps (or vibrates) when in a zone that lacks coverage (white spot). This is fundamental for critical services (security, emergency and so on). When the user goes to a covered area, the noticer ceases beeping. Similarly coverage maps are often used to visualize coverage, these are produced by networks themselves as well as independent companies. </p><p>Coverage noticers can be integrated in a mobile phone also and several apps exist to show coverage maps on devices, including OpenSignal. </p> <h2 id="see-also">See also</h2> <ul><li>Femtocell</li> <li>Footprint (satellite)</li> <li>Mobile phone</li> <li>Mobile computing</li> <li>Pass (spaceflight)</li> <li>Roaming</li> <li>Telecommunications network</li> <li>White spot</li> <li>Wireless</li></ul> <h2 id="external-links">External links</h2> <ul><li>Understanding Cell Phone Coverage Areas. FCC Consumer Facts</li></ul>