The Samsung Galaxy S5 Prime, which is almost definitely coming, has had yet another leak. This time it's about data speeds which could reach a staggering 255Mbps for downloads.

To get this speed in perspective that's the equivalent of downloading an 800MB film in just 28 seconds. So about a minute faster than current LTE phones can manage.

The secret to these super speeds is the Qualcomm MDM9635 multimode modem that's rumoured to make an appearance in the S5 Prime. The modem was built with 20nm architecture so should be power friendly. It is able to use more than one layer of LTE to achieve the speeds it's claimed it can offer. The rumour comes from Korean ZDNet who doesn't know when the chip will appear but does mention 20 days in relation to "Samsung's internal affairs".

When we will see the Samsung Galaxy S5 Prime isn't clear but with LG due to unveils its G3 next week we'd expect Samsung not too far behind.

The rumour mills suggests the S5 Prime will include a 5.5-inch display with a 2560 x 1440 resolution and a quad-core 2.5Ghz Qualcomm Snapdragon 805 processor with 3GB of RAM. Other features include an Adreno 420 GPU, 16-megapixel main camera and 2-megapixel front facing snapper, 32GB storage and Android 4.4.2.

READ: Metal Samsung Galaxy S5 Prime revealed in leaked photos