Samsung Galaxy S4 LTE-A was the first device from Samsung that supported downloading speeds up to 150 Mbps. It seems that the new device called Galaxy S5 Prime will be the first handset that will support downloading speeds up to 225 Mbps. These information appeared in the Korean media and stated that the new S5 Prime features a Qualcomm MDM9635 multimode modem. This modem supports Cat 6 LTE and it's the first device built using a 20nm process. SK Telecom from South Korea is to introduce LTE-A networks pretty soon, this meaning that the above downloading speeds aren't mythical.
There were already some test on the market showing a Qualcomm demo network with downloading speeds up to 300 Mbps. These were made by a modified Galaxy Note 3 running on a Snapdragon 805 CPU. But real networks don't support so high speeds right now, the South Korean users will be glad to have 225 Mbps, which is quite impressive in our opinion. But the thing is that all Samsung's devices that will be launched in the second part of the year will feature Snapdragon 805 CPU, so this won't be a feature for Samsung Galaxy S5 Prime to tout too much.