I purchased a Netcomm SIM with 800MB of data for $56 (USD). This is more expensive than other European countries but fast wifi connections were hard to come by in Norway. After 35 days (no video watching), I still had 100MBs of data available. I found Netcomm’s coverage to be 100% in Norway. Their network is mostly 3G, no LTE yet. In some more remote areas, the cellular network is still on the EDGE technology. Netcomm sales staff can provide any of the three SIM sizes. I was very satisfied with Netcom’s 100/200/800 prepaid data plans. To monitor your data usage reset your cellular data counter in your device’s settings>cellular data usage area.