Resolved -
This incident has been resolved.
Aug 21, 16:20 BST
Monitoring -
We believe the issue of an unusually high number of SMS messages ending up in a failure state is isolated impacting a small number of services whom we have contacted; we are monitoring.
Aug 21, 10:15 BST
Investigating -
An unusually high number of SMS messages are ending up in a failure state. We are working with our providers to understand the root cause of the problem.
This may impact successful delivery of SMS notifications to a users handset.
Aug 21, 07:08 BST
Resolved -
This incident has been resolved.
Aug 14, 12:29 BST
Update -
We have seen an improvement in delivery times for SMS services from O2 from about 11:10am this morning. We will continue to monitor and post any updates here.
Aug 14, 12:03 BST
Monitoring -
We are aware of some degradation of SMS services from O2 starting at 10:36 BST. Sending and receiving of SMS, and receiving of delivery receipt may be affected or delayed. Other mobile networks that rely on the O2 infrastructure may also be affected.
GOV.UK Notify itself is fully operational. We will continue to monitor and post any updates here.
Aug 14, 11:12 BST