Can not connect to App Store since iOs15 upgrade
Hi , I was mid side by side transfer of a Pro11 to a Pro12 and the Pro 12 upgraded to ios15 . After which it couldn't connect to the app store to complete the upgrade. I upgraded the original phone and started again .. but that phone can now not connect to app store. my iPad , still at 14.7 CAN connect to App store .. so it looks like ios15 has broken my connection to App Store .. how do i fix this (I have tried hard reset, changing from wifi to 4g etc as recommended on a few sites) - any help appreciated , thanks
iPhone 11 Pro Max, iOS 15