Apple already sold over 4 million iPhone 4S units in just 4 days. One of the most anticipated features is Siri. With over 4 million people trying to test Siri, it looks like apple is having problems to handle all the connections.
Some users repor that you can fix this problem in a few steps.
- Go to Settings > General > Siri, and turn Siri off, then wait a few seconds
- Go to Settings > General > Reset > Reset Network Settings. Your phone will take a few seconds to reboot
- Go to Settings > General > Siri, and turn Siri back on, then wait a few seconds.