Telephone numbers in Singapore digits. Five digits were introduced in 1960s, whereas 5-digit and 6-digit phone numbers were introduced in 1960s as fixed lines grew, but in that year, these changed to seven digits as the introduction of new towns arose (Tampines, Jurong East, Bukit Batok, Yishun and Hougang) and a large number of new numbers were required. Rationalisation was based on geographical locale over the 12 years. In 1995, the digit '9' was added to the front of mobiland pager numbers, making numbers eight digits, and on 1 March 2002, the digit '6' was added to the front of existing fixed line telephone
UK Calling landline and mobile companies including Three UK, Vodafone and Virgin Media. Before the UK Calling system was introduced, callers would often be given unclear information about the costs of calls made to service numbers. Advertisements of service numbers were often accompanied by messages such as: "“Calls cost 20p per minute from a BT landline. Other landlines may vary and calls from mobiles may cost considerably more.”" These messages were seen as confusing by many, with the cost hard to decipher unless the call was made from a BT landline. Following research also found that phone users were sometimes confused by