Both mobiles are iPhone 14s with latest iOS. Every now and then they're just kicked off the wifi, it doesn't coincide with using any other device or seem to follow a logical pattern. The router remains fully functioning throughout and all other devices in the household work normally and have a good solid connection. Switching the wifi off and then on again on the phone allows them to reconnect. It doesn't alert us to the lack of wifi or say the connection is lost, they just drop off the connection and attempt to switch to 5G. As mobile signal here is poor it means the phone just stops working. It can also happen when we aren't using the phones, sometimes WhatsApp messages arrive delayed as the phone had no signal or wifi.
We first experienced the issue in January and a TalkTalk team member fixed the problem over a web chat. They said it was a router setting causing the problem and that they'd log the issue in our file so it wouldn't happen again and any other team member would be able to fix the problem if it did. A few weeks ago we had a problem with the router, it crashed and had to be reset to factory settings. Since then the connectivity issue with the iPhones has returned. I've contacted TalkTalk multiple times now and asked them to pop the router settings back to whatever they were before, but each time they claim to have found a different issue and fixed that instead.
