Great! You found us looking for a sim card to use in india, but did you know that getting a sim card in india can be quite a daunting task. And then, trying to find the cheapest SIM card in India for a heads up can be absolutely exhausting with so many options available even when the SIM card price in India is mostly affordable.Before getting a sim card, it is important to understand how telecom works in India, It could be very different from what you are used to. Types of SIM card in IndiaHere are two types of SIM cards available in India to help you narrow down the choices. 1. Postpaid SIM CardA postpaid SIM Card is the one where you are billed after having used the services like calling, data, texting. Postpaid plans cost more than prepaid plans generally. Your billing details are given to you in the end. The bill is usually sent to you at the end of a month long cycle.This works out well for residents and not available for foreign travellers. 2. Prepaid SIM Card or Pay as You go SIM CardA prepaid sim card in india for foreigners or a pay as you go sim india is where you pay before hand to avail services like calling, data, texting. The plans on this one are comparatively cheaper. Billing details aren’t provided so expenses remain vague.Most Indians use Prepaid sim cards. This works out better for foreigners as well. However, there are some downsides of getting a prepaid sim card. It needs constant topping up. You will get unwanted SMSs because the service provide does not differentiate between an Indian resident and a tourist. So, you need to register your number for DND, which for a shorter stay may not work out. Also, for indians the activation of SIM card is almost immediate based on their unique identity number called Aadhar. But for foreigners the activations takes a long time. In some cases even about 2-3 days. How to Top up a Prepaid Card?When you run out of credit on your prepaid card, you will only be able to take incoming calls (only those that don’t cost you roaming charges) and you won’t be able to make calls or text or use data.