shǒu jī tào cān lǐ de “yuè zū” shì měi gè yuè dōu yào kòu de fèi yòng, bú shì bàn kǎ shí yī cì xìng fù wán

手机套餐里的“月租”是每个月都要扣的费用，不是办卡时一次性付完。

The 'monthly fee' in a phone plan is a charge deducted every month, not a one-time payment when signing up.