Don't correct me please because that first letter hasn't been capitalized because this is the actual name of the company, a company that is marketed by the more prestigious KDDI Corporation a fact that has also brought it the name of au/ KDDI which means in a more western language "au by KDDI". At the moment, this is the brand name that is appearing on all the phones available under the service of KDDI and, if I may say so, from what I have seen so far today on their website, this is a very well made choice.