Oh...okay I see...meaning only Torch 9810,9860 and bold 9900 and 9930 are the ones with 4G enabled devices...
But though, In my country, they don't switch to 4G.
I also know playbook as a device that has 4G, maybe original device that will come with full 4G coverage is an upcoming Blackberry 10 device.
Because up to so far they only advertise 9320 as the device that has 3.5G and in my country, our carries don't support 4G on the devices, I've never heared devices having 4G coverage.