The mobile market is split into two broad categories: prepaid and postpaid. The core difference between the two is in the naming; prepaid plans are bought in advance of their use, postpaid plans are paid for at the end of a set period, usually a month.
Practically, the difference is that prepaid plans have a hard limit. You get a set amount of credit (calls, SMS and data) and when you’ve used this you need to recharge your account to get more. Postpaid plans can be used before the agreed limits in the plan, but you will pay extra for this excess usage. For example, if you have used all the included data in your plan for the month your carrier might automatically top-up the account for a set fee.
Both account types serve a purpose and should be part of your consideration. If you want an always-on style of service you should get a postpaid plan. If you want total control over how much you spend each month you should consider going prepaid.
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