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Docomo provides phone, video phone (FOMA and some PHS), i-mode (internet), and mail (i-mode mail, Short Mail, and SMS) services. It is the largest wireless carrier in Japan, with 82.632 million subscribers as of March 2021. [7] Docomo was spun off from NTT in August 1991 to take over the mobile cellular operations.
Big shake up in Japan's cell phone industry (100 million mobile subscribers) today: NTT Docomo, the country's leading carrier (55 million customers), is planning to make all of its cell phones SIM ...
This list ranks the countries of the world by the number of mobile phone numbers in use. Note that it is not the number of phone devices that are being given here, but the number of phone numbers in a country. In some countries, one person might have two mobile phones. Also, some mobile phone numbers may be used by machines as a modem (examples ...
GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM . Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
The Leitz Phone 1 is Leica's first self-branded mobile phone, and it'll be a Softbank exclusive when it launches in July. The camera maker isn't afraid to admit that the Leitz Phone 1 is actually ...
Freedom of Mobile Multimedia Access (FOMA) is the brand name of the W-CDMA-based 3G telecommunications services being offered by the Japanese telecommunications service provider NTT DoCoMo. It is an implementation of the Universal Mobile Telecommunications System (UMTS) and was the world's first 3G mobile data service to commence commercial ...
Cellular frequencies. Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular-compatible mobile devices, such as mobile phones, to connect to cellular networks. [ 1] Most mobile networks worldwide use portions of the radio frequency spectrum, allocated to the mobile service ...
0036 NTT East. 0037 Fusion Communications. 0039 NTT West. 0041 SoftBank Telecom (international / former Japan Telecom) 0053 KDDI (Resold) 0056 KDDI (international) 0061 SoftBank Telecom (international / former Cable and Wireless IDC) 0066 SoftBank Telecom (international / former Cable and Wireless IDC) 0070 KDDI Toll Free.