I called AppleCare because Siri was only working aboiut 10% of the time. The rest was "I'm sorry, I'm having trouble connecting to the network." Systemwide dictation was also not working. The fix they suggested (from a memo just distributed internally at AppleCare today). In fact, they emailed this to me afterwards-- 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 It should work.