What is tethering/personal hotspot and how can I configure this?

TL;DR
Tethering/personal hotspot allows you to share an Internet connection with different devices. This is usually via Wi-FI, a USB data cable or Bluetooth.

Context
If your device has this function and you enter the required setting (this is different for each device - check the manual of your device), you will be able to tether. 

To configure the hotspot on an iPhone/iPad:

  • Go to 'Settings' and select 'Mobile Network'.
  • Go to 'Mobile data network' and scroll down for the option 'personal hotspot'.
  • Enter the correct APN data: web.be, web and web
  • Then restart your device to save the settings. Your hotspot will now be available and you can share your mobile Internet with other devices.