The APN Settings (Access Point Names) are necessary for your iPhone to be able to find to correct server from the Global Voice network, without this setup, you won’t be able to use your data plan to connect to the internet on your iPhone.
This is the Global Voice APN Settings for your Iphone
If you tried the ‘automatically’ option but did not receive an incoming SMS, you can configure the
APN settings manually.
Note: before making the configuration below please make sure your device is connected to a Wi-Fi network
a. Open your Safari browser, and go to m.apnchanger.org
b. Select the option ‘Manually’
c. In the ‘APN Name’ field, type: internet
d. Username / password: Leave Blank (nothing)
e. Continue with the instructions to install the APN
Note: Please check that ‘mobile data’ and ‘data roaming’ is on.
You can find it on ‘Settings’ ‘Cellular’