2G Tracker sim card from o2.
You need to top up to activate this sim. Go to http://www.o2.co.uk/topup .
This sim works in all tracking devices on 2G. It states 4G on packaging but is compatible with 2G or 3G.
To use internet tracking please set up to APN settings in your tracker.
APN - payandgo.o2.co.uk
Username - payandgo
Password - password