17th
![permalink](/web/20110321211357im_/http://status.twitter.com/themes/5/permalink.gif)
Maintenance: Some SMS services are offline (Complete) 4 days ago
Twitter is undergoing maintenance on its SMS services. Some SMS features will be unavailable during this time: Users wont be able to tweet via SMS, change SMS settings, or add an SMS device.
The outage is expected to be a few of hours. We will update when services are back online.
Update: The maintenance is now complete. All services are back online