Good news for anyone waiting to upgrade to iOS 5.1.
Google Voice is a great way to supplement text message usage and cut down on the number of paid messages sent through your carrier, but it has its share of issues. After using Google Voice as my primary means of sending text messages for 2 months I had to switch back to standard text messages for a number of reasons.
Delayed and/or missed messages
On occasion I would get a text from a friend wondering why I never answered their previous text. My response would always be that I never received it in the first place. I would also receive messages saying “I’ll be there in 10 minutes” immediately followed by a phone call from them saying that they have been waiting for me for 15. In the age of instant communications, we depend on messages being delivered very quickly. GV just wasn’t good enough all of the time.
This is a pretty good summary of the shortcomings of the new iOS 5 notification center.