
Procedure of China Unicom 4G 3G Internet and MMS APN Settings for Apple iPhone 6s 5 4s iPad Hong Kong and China
iPhone APN
From the main menu, tap Settings -> Cellular -> Cellular Data Network -> APN. and enter the following details

Cellular Data:
APN: 3gnet
Username: Blank
Password: Blank
LTE Setup(Optional):
Camera: Blank
Username: Blank
Password: Blank
MMS:
APN: 3gnet
Username: blank
Password: blank
MMSC: http://mmsc.myuni.com.cn
MMS Proxy: 10.0.0.172
MMS Message Size: 1048576
MMS UA Prof URL: blank