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Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
In 1985, NTT offered Japan's first mobile phone service, called the "Shoulder Phone." In 1988, Mobile Communication Group, which later was absorbed into KDDI , started mobile phone service In 1993, NTT Docomo started its first digital mobile phone service ( 2G ), using a Time division multiple access (TDMA) variant called Personal Digital ...
This list ranks the countries of the world by the number of mobile phone numbers in use. As an important caveat, this list does not provide the number of mobile phones in use. It is common for each SIM card has a separate phone number, so phones with multiple SIM cards will have multiple phone numbers.
1xx Special numbers 001 and 00xx Carrier selection codes 0x 2-digit geographic area codes 0xx 3-digit geographic area codes 0xxx 4-digit geographic area codes 0xxxx 5-digit geographic area codes 0x0 3-digit non-Geographic area codes (excluding 010) 0xx0 4-digit non-Geographic area codes (01x0, 0570, 0800, 0910, 0990)
IP phone lines in use: 16.766 million (2007) [2] Mobile and PHS lines in use: 105.297 million (2007) [ 2 ] international: satellite earth stations – 5 Intelsat (4 Pacific Ocean and 1 Indian Ocean), 1 Intersputnik (Indian Ocean region), and 1 Inmarsat (Pacific and Indian Ocean regions); submerged cables to China, Philippines, Russia, and US ...
As of March 2023, the penetration rate in Hong Kong was estimated at 282% over a population estimate of over 7.473 million, with 21.61 million public mobile subscriptions. [30] Hong Kong's telecom regulator is the Office of the Communications Authority (OFCA).
au, or au by KDDI, is a Japanese mobile phone operator. au is a brand marketed by KDDI in the main islands of Japan and by Okinawa Cellular in Okinawa for their mobile cellular services. au is the second-largest wireless carrier in Japan, with 60.398 million subscribers as of March 2021. [1]
On April 1, 2002, au by KDDI launched 3G networks using CDMA2000 1x technology. [citation needed]On November 28, 2003, au by KDDI launched EV-DO Rev 0 service in the "CDMA 1X WIN" brand, and revolutionized Japan's mobile telecommunication industry by introducing fixed rate data subscription plans at a data rate of 2.4 Mbit/s.