Indeed, but what I'm trying to say is network band support is part of the SoC, it's unlikely the SoC is different for different markets as it will be very costly to produce like so. Therefore, the SoC as a hardware actually supports all bands, but the decision to enable or disable is determined by the firmware written by the smartphone manufacturer.
Also providers can limit the scanned bands for faster search in certain areas....
I also look for something to enable scan the whole range phoone supports. I need N77 for privtae use.
