TOKYO -- Top Japanese mobile carrier NTT Docomo will offer customers a free year of Amazon Prime as telecom and tech companies form alliances ahead of next spring's rollout of ultrafast 5G wireless service.
Top wireless carrier dangles streaming content to lure new users

Docomo users stream 4K video during a trial run on a Tobu Railway train in Tokyo. (Photo by Rie Ishii)
TOKYO -- Top Japanese mobile carrier NTT Docomo will offer customers a free year of Amazon Prime as telecom and tech companies form alliances ahead of next spring's rollout of ultrafast 5G wireless service.