Will you proofread this: 37 words.

Hi all,

I'm a translator for mobile applications such as those of iPhone and have a paragraph that I'd like to add on my business website, will you please make sure if it is making sense, especially the articles and plurals part?

"Note: please provide the promotional code if available, otherwise the additional cost for your application will be charged. In order to archive the best accuracy, we check the contexts on the iPhone, not only on text files."

Thanks in advance,
M