Telenor has the worst data rates and signal strength.
Their EDGE network data rate is extremely poor. Take a long long time to load a simple page. In simple words its useless.
Similarly the signals keep on disappearing. I have used the SIM in different cellphones, different locations, same poor quality.
Sometimes you receive the message which was sent 6,7 hours ago. Lodged a complaint several times but still same pathetic quality.