The APN must be configured on the device to allow access to the Internet via the SIM card.
The configuration file must be installed on the iPhone devices, otherwise an Internet connection is not possible. The following link automatically installs the APN settings on your iPhone:
Open the link on your iPhone.
The APN configuration installation will appear on your display.
The APN configuration settings for iOS 12 on iPhone are:
- Mobile network
- Mobile data network
- APN: dr.m2m.ch
- User: (empty)
- Password: (empty)