1. Go to Settings > Wireless & Networks > VPN > Tap on the + icon
2. Enter in a VPN Name/Description
3. Tap on Type, and select "L2TP/IPSec PSK"
4. Enter in a L2TP/IPSec server name. A list of our servers can be found HERE
5. Set IPSec pre-shared key to celol2tp
6. Save
7. Enter in your vpn username (not your email), password and tick "Save account information" > Connect
NOTE: If you want the VPN connection to be always on, tap on the three dots/menu button in the VPN section and select the option from the menu. If you choose to do "awlays on" you will need to enter in the IP of L2TP/IPSec server.