Hello, this is not a permanent solution. I've done this 3 weeks ago and have had to do the same today because the same issue cropped up again. This was my answer in another thread I cant find : Create a new Apple ID (not a developer account because it will ask you to pay). Then in the project in XCode, Signing & Capabilities, under Team, I 'Add an account' with that new apple ID. Remember to also generate a certificate and have a unique bundle identifier. Hopefully this is straightforward. Then from there, clicked build, it asked me to enter my password a few other times and I clicked 'always allow'. The app magically showed up on my phone with the same 'not trusted device etc etc' and then in Settings > General > VPN & Device Management, the newly created Apple ID appeared with the app I was working on and click Trust.

Repeating some bits from the correct answer above BUT I did not create a new developer account. I initially thought I needed to fork out for a new membership. I created a new Apple ID. Then in the project in XCode, Signing & Capabilities, under Team, I 'Add an account' with that new apple ID. Remember to also generate a certificate and have a unique bundle identifier. Hopefully this is straightforward. Then from there, clicked build, it asked me to enter my password a few other times and I clicked 'always allow'. The app magically showed up on my phone with the same 'not trusted device etc etc' and then in Settings > General > VPN & Device Management, the newly created Apple ID appeared with the app I was working on and click Trust. Like many of you, I was like ????, this is hopefully a temporary issue. I have also created a ticket to report this as a bug. Some additional stuff that you might be interested in : I deleted the app on my phone that still thought I was my OG apple ID (gone but not forgotten) Building using react native, metro doesnt seem to be work like it did but the app does so hey