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Do you find you have problems with MMS and Google Voice? Last I checked, it was unsupported and text messages with pictures or video just went to /dev/null without any notifications to either party. That was a no-go for me.
MMS isn't supported and still silently fails (which is annoying). I just tell people to 'text my email addresss' which works, or to use something else (like facebook/snapchat).
http://googlevoiceblog.blogspot.com/2011/10/first-steps-towa...