A data plan is a service provided by mobile network operators that allows users to access the internet on their smartphones or other devices. It typically includes a specific amount of data, measured in gigabytes (GB), that can be used for activities like browsing the web, streaming videos, and using apps. Users can choose from various plans based on their data needs and usage habits. Data plans can be prepaid or postpaid. In a prepaid plan, users pay for their data upfront, while in a postpaid plan, they receive a bill at the end of the month based on their usage. Many providers also offer unlimited data plans, which allow users to access the internet without worrying about data limits, although these may come with certain restrictions.