# SIM Types

## <mark style="background-color:blue;">SIM Types:</mark>

### **1.**[ **Prepaid**](/menu/plans/prepaid.md)

* A SIM card with a certain balance. When the balance runs out, you can refill it yourself or through auto-refills,  and the SIM card will continue to work.

### **2.** [**Subscription**](/menu/plans/subscription.md)

* A subscription is a product type where the SIM card is used for a month, and at the end of the month, an invoice is issued for all expenses according to the plan (usage). Payment for the usage is deducted at the end of the month.

**Types of Subscription:**

* [**Static Pool**](https://faq.droam.com/menu/publish-your-docs/pages/JZRWnnRzP0JkYZSyOTU7#id-4.-static-pool)
* [**Dynamic Pool**](https://faq.droam.com/menu/publish-your-docs/pages/JZRWnnRzP0JkYZSyOTU7#id-5.-dynamic-pool)
* [**Unlimited**](https://faq.droam.com/menu/publish-your-docs/pages/JZRWnnRzP0JkYZSyOTU7#id-3.-unlimited)
* [**Monthly Bundle**](https://faq.droam.com/menu/publish-your-docs/pages/JZRWnnRzP0JkYZSyOTU7#id-1.-monthly-bundle)
* [**Pay per Megabyte**](/menu/plans/subscription.md#pay-per-megabyte)

### **3.** [**PAYGO**](/menu/plans/paygo.md)&#x20;

* PAYGO (pay-as-you-go in real time) is a flexible data billing product that charges users per megabyte of data used, offering advanced features and seamless integration. Unlike standard pay-per-megabyte models, PAYGO allows operators to set prices not only based on total data consumption but also for specific countries.


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