1. Before buying, it is always essential that the terms and conditions printed on it should be carefully read and understood. Without understanding the terms, do not rush to select the service provider.

2. Find out if there are any connecting charges, or charges for voice mail, answering machine, taxes or disconnection fees etc. These hidden costs are deducted from the Card balance and the buyer will not be aware of it at all. Normally, fees are charged for those who use the card for short duration only.

3. Get the rate from various service providers and compare the tariff. Those who make frequent short distance calls, ‘per minute call tariff’ would be most advantageous.

4. Some times the validity of the card will be for a specified period from the date of purchase. If you are unable to utilize the balance within the specified date then such purchase would not be advisable.

5. Do not be guided by cost only. Examine the connection quality, customer support etc and compare it with the rate.

6. It is generally believed that it would be advantageous to select the service provider through internet. This is because, in such cases, payment is made through Pay pal or through debit/credit card. So, here the buyer is protected by consumer protection laws.

7. While purchasing online, ensure that there is no charges for toll free access number.