I have just upgraded to IOS 13.6 as a result of the battery draining rapidly. On researching it was suggested that a previous update may be causing this problem and 13.6 had addressed this issue, sadly not. I then decided to dump all apps and just keep the common ones. I have also gone through the refresh process and done a reset. My feeling now is that it’s a hardware problem. The techs at the place I bought it say, it’s not a battery problem and that they would need the phone for a week for a full diagnosis. Before doing this, any advice would be welcome. Thanks, Euan.