Same problem here. New iPad 4G with a Rogers LTE sim card shipped at the same time. Here was my recent post in MacRumors - seems to be the same problem as everyone else here...
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Im trying to activate the cellular data on my new iPad, using a new Rogers LTE SIM card purchased at the same time as the iPad. I can't, for the life of me, get it to work.
I've tried toggling off LTE, I've tried adding the Rogers APN settings (rogers-core-appl1.apn), lots of reboots, and still nothing. Under Settings -> General -> About, Network shows "unavailable" and at the top of the iPad it continues to say "No Service". The About page does show ROGERS 12.0 for carrier and it lists an IMEI.
I seem to remember seeing "SIM not provisioned" at one point - I think when I pressed the "Network: Unknown" field under About. Now I don't see that anywhere though.
Anyone have some tips? Maybe a Canadian Rogers person?