问题
Is there some secret sauce to third party sms/mms messaging apps? Our app downloads and Installs fine, sends sms fine, receives sms fine. The app also receives mms fine, but when trying to send MMS from either a Sprint or Verizon phone message always fails (quickly). We have tried many different APNs but I am beginning to think that maybe these APNs are only for GSM and not CDMA networks? Sprint does not allow editing to apns so I cant find APN settings except on one phone. Here is the most recent APN info I have:
Sprint APN -Name: cinet.spcs -Proxy: not set -Port: not set -Username: null -Password:**** -MMSC: http://mms.sprintpcs.com -MMS proxy: 68.28.31.7 -MMS port: 80 -MCC: 310 -MNC: 120 -Authentication Type:none -APN type: default,mms -APN protocol: IPv4 -APN roaming: IPv4
Verizon APN -Name: Verizon Internet -APN: VZWINTERNET -Proxy: Not set -Port: Not set -Username: Not set -Password: Not set -Server: Not set -MMSC: Not set -Multimedia messaging proxy: Not set -Multimedia messaging port: Not set -MCC: 311 -MNC: 480 -Authentication type: Not set -APN type: default,dun,supl -APN protocol: IPv4/IPv6 -APN roaming protocol: IPv4/IPv6
T-Mobile and At&t work well but cannot get MMS to send from Sprint & Verizon phones once app is installed??
来源：https://stackoverflow.com/questions/28763514/i-am-helping-develop-a-sms-mms-messaging-app-for-android-but-we-cant-send-mms-fr