There is no charge for receiving incoming calls when roaming in countries where the local GSM operators do not impose a per minute surcharge on calls made by foreign GSM handsets roaming in their GSM network.
There is no charge on receiving incoming calls when roaming in the countries which you can find at "yes two free incoming countries" list.
The GSM operators of some countries impose a per-minute charge on all visiting (roaming) GSM handsets making a call through the local/country GSM network; the applicable charge is imposed by the local/country GSM operator. There is a per minute charge for receiving incoming calls when roaming in the when roaming in the following countries:
Afghanistan, Albania, Andorra, Anguilla, Antigua/Barbuda, Argentina, Armenia, Aruba, Azerbaijan, Bahamas, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bermuda, Botswana, Brazil, Brazil TIM, British Virgin Islands, Bulgaria, Burkina Faso, Cambodia, Cameroon, Canada, Cape Verde Islands, Cayman Islands, Chad, Chile, China, Colombia, Comoros, Congo, Congo Dem Rep, Cuba, Czech Republic, Denmark, Djibouti, Dominica, Dominican Republic, East Timor, Ecudaor, Ehtiopia, El Salvador, Equatorial Guinea, Faeroe Islands, Fiji Islands, French Polynesia, Gabon, Gambia, Ghana, Gibraltar, Greenland, Grenada, Guadaloupe, Guam, Guernsey, Guinea, Guyana, Haiti, Honduras, Hong Kong, Iceland, India, Indonesia, Iraq, Isle of Man, Ivory Coast, Jamaica, Japan, Jersey, Kazakhstan, Kuwait, Laos, Lebanon, Liberia, Libya, Liechtenstein, Macau, Macedonia, Madagascar, Malaysia, Maldives, Mali Republic, Martinique, Mauritania, Mauritius, Mayotte Island, Mexico, Moldova, Montenegro, Morocco, Mozambique, Namibia, Nepal, New Zealand, Nicaragua, Oman, Pakistan, Palestine, Panama, Paraguay, Peru, Philippines, Qatar, Reunion Island, Romania, Russia, San Marino, Senegal Republic, Seychelles Islands, Sierra Leone, Singapore, Slovenia Republic, Somalia, Sri Lanka, St.Kitts & Nevis, St.Lucia, St.Vincent/Grenadines, Sudan, Suriname, Switzerland, Syria, Taiwan, Tajikistan, Thailand, Togo Republic of, Trinidad/Tobago, Tunisia, United Arab Emirates, United Kingdom, Uruguay, USA, Uzbekistan, Yugoslavia/Serbia, Zimbabwe.
The per minute is still some 50% less than what you would pay if you were roaming in these countries using your regular SIM issued by the GSM operator of your country of residence.
There is an additional charge of US$0.37/minute if an inbound call is dialed (called) to the USA No. of the YES2 Sim (instead of its UK No.).