Hard-code creative dimensions in mobile tags
If you've agreed with your advertiser to serve the same image size for all requests, you can hard-code the dimensions into the mobile DART ad tags.
To do so, add
&sp=widthxheight immediately after the
ord= value in the
img tag, as in this example:
<IMG SRC="http://ad.mo.doubleclick.net/dartproxy/dfa.mobile.handler?k=Nxxxx.site-keyname/Byyyyyyy.n;kw=[keyword];ord=[timestamp]&sp=300x50" BORDER=0>
You can also use this syntax to hard-code a mobile internal redirect tag to serve a given creative size.