3G在美國也沒有統一標準，ATT用WCDMA，Verizon用CDMA2000。同樣，Sprint 和Intel推WiMax,

來源: 蔣加華於 2014-12-29 14:40:27 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.