'电话' literally means 'electric speech'—'电' (diàn) refers to electricity, and '话' (huà) means 'speech' or 'words'. Together, they form the standard modern Chinese term for 'telephone', encompassing both landline and mobile phones in everyday usage. It is a neutral, widely understood noun used across all registers—from casual conversation to formal documents.

The word is commonly used as a standalone noun ('打个电话' — 'make a call'), as a modifier ('电话号码' — 'phone number'), or in compound terms like '电话卡' (phone card) or '电话亭' (phone booth). While historically it referred only to wired telephones, today it is fully idiomatic for any voice-based telecommunication device, including smartphones—even when no actual 'electric speech' is involved in the technical sense.