话费 huàfèi call charge
How to remember 话费: 话 speech + 费 expenses = call charge.
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How it is used
- Phone-call charges / mobile credit - 充话费 (chōng huàfèi) top up phone credit, 话费用完了 out of credit.
- Specifically the money for phone/mobile service; everyday consumer word.
- Related: 流量 (liúliàng) is mobile data, a separate charge.