About 0044.co.uk 0044 is the UK’s most popular international calling service, saving you up to 90% on your calls and data usage wherever you are in the world! 0044 was created in 2003 to help travellers keep their phone bills at a minimum. Leaving the country with your mobile phone, often results in paying too much, too often in phone bills, but by developing unique solutions with like-minded network operators, they’ve saved thousands of travellers potentially millions of pounds. 0044 work tirelessly to provide a comprehensive range of voice and data solutions, offering significant savings, sensible prices, quality products and excellent customer service. They are also constantly updating their range with the latest available technology so you never feel behind!