lol dont say iphone, i wont, they are crap, lol, i use a htc diamond 2, the marketplace does seem pretty limited, if you like to browse this may be a problem as the only marketplace i can seem to find is the default 6.5 one, is that what you mean by open market? if not could you message me hwo you did this? however, if you know what sort of app you want, google it for your phone, and if one exisits you can normally find it, like on xda-developers.com or .co.uk , then download either a .exe file (which you will need to load from your computer,) or .cab, which you can just load on your phone and will instal itself