There are so many that offer these kinds of services. So far the best is 10-10-310 then the area code and then the number. How easy is that! A child can do it.
International calling cards are the best options. International calling charges can be very high for US cell phones.
The answer can be subjective. Instead, ask how the quality of the airlines is.
Ther are many international calling cards out there. I have found that Titan and Aries offer pretty good rates if you are calling Europe,about one cent a minute on a land line.
There are several options for making cheap calls to China, including using internet-based services like Skype, WhatsApp, or Viber, purchasing an international calling card, or using a mobile app like Rebtel. These options can help you save money on international calls to China.
slickcall international calling app provides the best services in calling
The best place to look for on the internet would be www.callingcards.com. They have prepaid calling cards and offer discounts as well.
There are many places to purchase cheap international calling cards, one of which is the Post Office which claim to have very competitive rates, but you should always consider shopping around as O2 also have very good rates from just 1p a minute, Tesco also start from 1p per minute but go a little further and give you å£1 of calling credit if you download their International Calling Card App.
The best option when traveling would be a good blackberry, with international calling.
Aga Khan Hospital - Karachi Truly international standard
Many companies offer international calling cards at highly competitive rates. The rates depend upon the country/ countries of your choice and the country where you reside and your requirements or frequency of calls. Pl check up these links and compare the options and prices to decide what serves your needs the best- www.phonecardsmile.com/ ;www.comfi.com/; www.callingcards.com/; www.nobelcom.com/; www.cloncom.com/ and so on.
In South Asia, three countries Bangladesh, India and Pakistan are leaders in textile products. Textile products of Pakistan are valuable and best in quality according to international standards. Nowadays, Pakistan has become No 1 choice of European countries.