'Huà fèi' literally combines 'huà' (speech, talk, or by extension, phone call) and 'fèi' (fee, cost, expense). Together, it means the total amount charged for telephone services—typically referring to mobile phone usage, including voice calls, text messages, and sometimes data. It’s a common term in everyday life, especially when checking monthly bills, topping up prepaid accounts, or discussing telecom plans.

This word is used almost exclusively in modern, urban contexts involving telecommunications. Unlike more formal terms like 'tōng xùn fèi' (communication fee), 'huà fèi' is colloquial and widely understood across age groups. It does not refer to landline charges in official billing documents as often as it does in casual speech—many people use it broadly for any mobile-related service charge, even if technically overlapping with data or subscription fees.