Now that Google Voice is back on the iPhone (natively), many of us are using the app to send SMS messages. Still, since there is no real way to set an app as a default SMS handler, we found ourselves using both the SMS app and whichever GV app we found most useful.
No more! There's a new tweak in Cydia that merges the two. SMS GV Extension sets your Google Voice account as the default handler of text messages. Now when you send or receive text messages, it will be exclusively handled through the Google Voice API, and not your text messaging plan through your carrier.
For some of you, this is awesome. But there is a huge limitation with this solution...