I have a website that needs to use 0.3 value for viewport on iphone, but 0.7 for ipad.
Is there a way to set viewport for only iphone or ipad?
I'm not sure you can set a viewport for only iPhone but you could set the media query and thus the CSS for only iPhone I think.
By setting the media query for only device widths of the iPhone (320x480) or iPad (1024x768) you could possibly achieve what you're trying for.