[tracker1]

Some apps are problematic, and many don't follow the accessability settings for font size, as an example... the facebook app on android is all but impossible for me to read (far sighted). Some devices don't set their dpi correctly, and are even worse since the default settings make things way too small.

If you can't display close to 12pt text in your app at least as a visability option, then there are probably quite a few people that can't use your app... lower than 10pt is almost inexcusable imho.