How to say "Can I pay by phone?" in Chinese

This is a polite question formed with 可以 (kěyǐ, 'may/can'), the verb 用 (yòng, 'to use'), the noun 手机支付 (shǒujī zhīfù, 'mobile payment'), and the question particle 吗 (ma).

Use this in taxis, shops, or restaurants when you want to pay with your phone, typically via Alipay or WeChat Pay. It's very common in China, so this phrase is widely understood. If you don't have these apps, you might need to ask for other payment methods.