首先,转贴之前补充一下维基百科对APN的说明:
Access point name
(APN) identifies an IP packet data network
(PDN), that a mobile data user wants to communicate with. In addition
to identifying a PDN, an APN may also be used to define the type of
service, (eg connection to wireless application protocol
(WAP) server, multimedia messaging service
(MMS)), that is provided by the PDN. APN is used in 3GPP
data access networks, eg general packet radio service
(GPRS), evolved packet core
(EP......
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