I've got an Arches platinum 50b - dual sim 5" screen, 8mp front/2 mp rear running kitkat 4.4.2 got from Qvc as not too sure & can try for 30 days comes with 8 mp SD card screen protector &3 coloured backs.
have been using for couple of weeks and am impressed - only prob for me is can't get sky go at moment (waiting for new app which should work for most android phones
cheers
Steve