founded 2014 headquarters shiodome building 1 9 1 higashi shinbashi minato ku tokyo japan owner softbank 100 % 1 website www.ymobile.jp index.html ymobile corporation stylized y mobile is a subsidiary of japanese telecommunications company softbank group corporation that provides mobile telecommunications and adsl services . the current ceo of the company is ken miyauchi . it was formed in 2014 through the merger of willcom and eaccess and uses the y moniker brand from yahoo japan which is partly owned by softbank . on 1 april 2015 ymobile corporation merged into softbank mobile corporation now softbank corporation with the y mobile brand continuing to be used by the newly merged company . 2 contents 1 history 1.1 willcom 1.2 eaccess and emobile 2 gallery 3 see also 4 references 5 external links history edit willcom edit willcom logo willcom inc. kabushiki gaisha wirukomu was a phs operator based in tokyo offering flat rate wireless network data transmission and flat rate voice calls for its subscribers . the company was founded as a planning company in 1994 and started to offer telephony services in 1995 under the brand ddi pocket . its phs network covered almost all of japan and had the largest share of the japanese phs market . it continued operating after other phs operators had withdrawn their services . the company later became a subsidiary of kddi . willcom okinawa co. ltd. was a subsidiary for operations in okinawa . in 2004 the carlyle group acquired a majority stake from kddi and spun off ddi pocket in february 2005 with the new company called willcom . the number of its subscribers passed four million on may 29 2006 . a willcom phs phone tower in tokorozawa saitama in 2006 as an operator it had mainly base stations of 500mw radio output unlike other phs operators which had mainly built 20 mw base stations . the high output level caused some radio interference and it was difficult to place calls in dense areas such as shinjuku tokyo during the network s early days although these problems were eventually solved . on the other hand high output and sensitivity can also earn wider coverage of area per base station therefore the operator was able to expand its coverage faster than the competition . the market between phs operators and cellular telephony companies was incredibly fierce and until october 1996 it was not possible to make calls between phs and cellular telephones . even then charges for calls between the two different systems were high . phs became popular because of its lower cost causing cellular telephone companies to reduce their rates which were initially considered too expensive . furthermore the coverage of the cellular companies quickly expanded to comparable levels . with the competitive advantage of phs reduced ddi pocket went through difficult years at the end of the 1990s and the beginning of the 2000s . the declining market for phs service has caused the launch of its flat rate service and its buyout by carlyle . logo of eaccess on february 18 2010 willcom filed for bankruptcy with 206 billion yen in liabilities . 3 this took place after willcom was unable to reschedule its debt payments ; the company had been losing subscribers to competing networks with greater data speeds . 3 in december 2010 softbank purchased 100 % of shares issued by willcom . 4 willcom was in the process of rehabilitation under the corporate rehabilitation act . 1 on june 1 2014 willcom was merged with eaccess and formed ymobile . eaccess and emobile edit the toranomon twin building in minato ku tokyo headquarters of eaccess the company eaccess was established on november 1 1999 by dr sachio semmot as an adsl fixed line broadband provider . semmot founded emobile ltd. on january 5 2005 as a subsidiary of eaccess 5 offering 3g hspa dc hsdpa lte services . as they used to offer only data services they were not widely known but after teaming up with ntt docomo to offer voice services they became more popular . emobile had a reseller virtual network arrangement with several fixed line isps including asahi net . as of march 31 2009 their website claimed 90 % coverage of japan s population . as of april 17 2009 emobile introduced hsupa to metropolitan areas claiming support for 5.8 mbit s. as of early 2011 21mbit s hspa and 42mbit s dc hspa is available in major metropolitan areas depending upon the subscriber modem used . on march 15 2012 they began offering lte service with initial advertised speeds of 75mbit s. it is claimed that this speed will eventually increase to 112mbit s. total emobile subscribers as of april 30 2009 was 1.53 million ref web site . on january 1 2013 eaccess became a wholly owned subsidiary of softbank corporation now softbank group corporation . 6 eaccess merged with willcom to form ymobile in july 2014 . gallery edit willcom and emobile signs at a plaza in 2014 an emobile store in tokyo in 2012 a willcom emobile store in 2014 y mobile store in 2014 an emobile uim card see also edit softbank mobile phs w sim g book enterprise turnaround initiative corporation of japan references edit a b softbank annual report 2011 pdf . softbank . retrieved 2012 06 13 . http www.softbank.jp en corp group sbm news press 2015 20150401 01 a b yoshinori eki and pavel alpeyev february 18 2010 . willcom files for bankruptcy protection in japan update3 . bloomberg businessweek . completion of company split and increase and decrease of capital etc. of willcom inc. . softbank . 2010 12 21 . retrieved 2012 06 13 . http www.eurotechnology.com store emobile eaccess and willcom merge under the ymobile banner . telegeography . 2014 06 02 . retrieved 2014 09 18 . external links edit official website corporate website 1 v t e softbank group group companies sb creative sbi group softbank corp. sprint corporation 83 % yahoo japan alibaba group 36 % gungho online entertainment brightstar corporation aldebaran robotics arm holdings inmobi snapdeal dramafever tokopedia ola cabs grab related articles fukuoka softbank hawks sprint cup series v t e japanese mobile phone companies major network operators ntt docomo au by kddi softbank mobile y mobile minor and regional network operators okinawa cellular telephone mobile virtual network operators disney mobile bitwarp internet initiative japan japan communications j com mobile kwins ntt communications mobile retrieved from https en.wikipedia.org w index.php title ymobile corporation & oldid 735273739 categories telecommunications companies of japanmobile phone companies of japancompanies established in 1994softbankhidden categories articles containing japanese language textofficial website different in wikidata and wikipedia navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages edit links this page was last modified on 19 august 2016 at 17 11 . text is available under the creative commons attribution sharealike license ; 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