Apple iPhone 5 iOS 7Switch device
The easiest way is to install a direct fix by following these steps;
1. Make sure your mobile device is connected to a Wi-Fi network.
2. Open the Internet browser on your mobile device.
3. Go to the following URL: https://salt-ch.qelp.com/resources/en-uk/ios/internet-apn.mobileconfig
4. Click on «Install» to install the fix.
Note that this automatic fix is designed for ease of use and based on operating software standards. Salt cannot accept responsibility for any damage to your device, software or data.
Edit your CELLULAR DATA settings as follows: