* = For UK residents only - Please note that as of 28-9-2007 the non-geographical numbers (0870, 0844, etc.) will NO LONGER be included on any UK Mobile phone network, including O2-UK which included these numbers until that date. Changes are introduced by the OfCom - the UK’s Telecommunication Orginisation in charge of regulating these numbers.

For more information, please visit:

http://www.ofcom.org.uk/media/news/2007/02/nr_20070213b

(VoipBuster is a program like Skype, but it allows free calls to some countries’ landline numbers, calls which are chargeable by Skype)