Okay, now I have a better picture of what your site actually is. Being in the U.S. myslef i have never heard of Optus and thought it was a city in Australia! My bad, lol!
Now I also know that you are not a local service. Therefore i guess it doesn't matter if you Geo target your site or not.
Those issues cleared up, now on to whats left.
You are correct, those extra pages will not do you any good, only hurt you in the end.
Also correct about linking to other pages like iphone related blogs and news sites.
You have a tricky site to to target the keywords you are looking for, it is a little beyond my scope at the moment as i most deal with local business'. that being said i would still advise creating articles and blog posts and even trying to guest post about your service. I would also advise improving your content. More specifically the layout. I see a lot of sentences. Maybe combine some or add to some. If you are trying to reach the australia optus market start looking for blogs and sites related to iphone optus an "get involved" with the suggestions i mentioned above.
I need to go watch a movie with my girlfriend now! feel free to ask any more questions.
remember its all about being natural and that things take time.