Hi,
I've been downloading the lesson notes pdfs for the Lower Intermediate level to my iPhone, and was able to view them until lesson 17, at which point the text became garbled and unreadable. The lesson notes for lessons 18 and up are also unreadable on my iPhone.
Is there a particular PDF reader I should use for the iPhone? The lesson notes look fine on my computer, so it's not a problem per se with the pdf.
Thanks!