Also means
telecommunications
Usage Note
Telefonía is a technical and commercial term referring to the telephone industry or technology as a whole (telefonía móvil, mobile telephony; empresa de telefonía, telephone company). It is rarely used in casual conversation, where teléfono or móvil (Spain) / celular (Latin America) would appear instead. Feminine noun; no common plural needed in typical usage.
Examples
"Trabaja en una empresa de telefonía móvil."
Natural Translation
She works at a mobile telephony company.

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