The iPhone 5S will be provisioned autimatically with the right settings upon first usage with the Proximus simcard. To request these settings again, connect your device to your PC and run iTunes to install the socalled ‘Carrier Settings’.
For instructions how to configure your iPhone 5S manually, choose Next.
Go to the Start screen.
If Cellular Data is disabled, enable Cellular Data.
If Cellular Data is enabled, go to the next step.
Choose Cellular Data Network.
If Cellular Data Network is not available, manual configuration is not possible. In this case, connect the device to the computer and use iTunes to install the ‘Carrier Settings’.
Edit your CELLULAR DATA settings as follows:
Under APN, enter internet.proximus.be
Under Username, do not enter anything
Under Password, do not enter anything
The iPhone 5S has now been configured for use of mobile internet.
Return to the Start screen.
Switch off the iPhone 5S and restart it in order to activate the settings.