SMSs from EE to our 07 range seem not to be working. Our tests show the fail the be accepted by EE when sending, and the phone gives an error. This has been reported to both EE and our mobile carrier (who have also passed this on to EE).
EE have a problem routing SMS to 4474411 and are they are investigating.
We've been informed by EE that they escalated this issue further with their Providers for further investigation.
EE and our customers confirmed that this was fixed on Friday afternoon.