Telenor network only made for calling not for internet. Telenor calling rate are very cheap but for internet there is low connection.
Telenor network are only 2G and 3G.
Customer services also not be good. Uninor name change to telenor but they do not change their Network
Calling charges are cheap. Hence everyone use this sim for calling
In degital india network no use of telenor because they dont provide 4g network. I use this sim from 6 months but they dont impress thire customer
So I recommender you dont buy telenor sim. You use any sim.
Telenor charges now days expensive