Wifi on iphone

[Bryanmcke]

Recently we noticed our iphones were taking a long time to load websites. On 4g they load instantly. We thought it was our phones that were the issue so did all the usual, phone restart, router restart etc etc. we had friends in today that usually connect to the wifi and they said they had the same issue on our wifi. Anyone know what would be causing the issue? We have had no issue with netflix, teams or anything else using wifi. 

[PD100]

Hi, this has been happening to us recently, so would love to know the reason. We are on FTTC, with ipads and Mac mini seemingly unaffected.