2009-06-04 how to descriminate mobile carriers Java Mobile String agent = request.getHeader("user-agent"); if(agent.indexOf("DoCoMo") == 0){ //ドコモ } else if(agent.indexOf("J-PHONE") == 0 || agent.indexOf("Vodafone") == 0 || agent.indexOf("SoftBank") == 0){ //softbank } else if(agent.indexOf("UP.Browser") == 0 || agent.indexOf("KDDI") == 0){ //au }