human
What are the advantages and disadvantages of using a prepaid phone card?
assistant
Advantages of using a prepaid phone card include: 
1. Convenient, as there is no credit check or activation fee;
2. Easy to use, as they can be purchased in most stores or online;
3. Flexible spending, as you can only spend what you have loaded onto the card;
4. Lower rates than post-paid plans, as you pay for minutes used rather than an allotment;
5. No contracts, so you can cancel at any time;
6. Can be used from almost anywhere with a phone line;Disadvantages of using a prepaid phone card include:
1. Must buy minutes in advance;
2. Limited coverage area;
3. May incur additional fees such as international calling charges;
4. Requires reloading frequently;
5. Can't call 911 or other emergency services;
6. Can't take advantage of special discounts.