@Robert997 I still have this problem. How do I contact support?

@David-TP many thanks for the reply in answer to your points: iPhones are 13 pro max 256. Otherwise working perfectly. Children have 11 pro max 256. all apps ! Banking - no access; energy eg octopus...

Since upgrading iPhones yesterday I have the most horrendous lag using our x60 network at home. does not affect pc or wired devices. iPhones and iPads are not even be able to run speed test - either...