Chinese phrase
改用〜可以吗？ gǎi yòng 〜 ké yǐ ma
Meaning
Is it okay to switch to ___ instead?
When to use it
The phrase asks if switching to another option is acceptable. It politely proposes a change in method, choice, or plan.
Example dialogue
结账的时候我想 改用 手机支付 可以吗？ jié zhàng de shí hòu wǒ xiǎng gǎi yòng shǒu jī zhī fù ké yǐ ma
Could I switch to paying by phone at checkout?
可以，你用手机付款就可以了。 ké yǐ nǐ yòng shǒu jī fù kuǎn jiù ké yǐ le
Of course, you can pay by phone.