Did you deauthorized your iPhone before selling? And if you haven't you can still do so from iTunes or online.I just hope they finally add a way to manually remove devices from the Screen Time “all devices” list. I have an old iPhone that I’ve sold that’s still in my “all devices” list and there’s no way to remove it. Removed from iCloud device list, reset all devices, upgraded software versions, reported to Apple and it’s been escalated to engineering. The latest I keep hearing is “maybe a software update will fix it eventually.” Well I’m still waiting, and I still have this long gone device showing up in Screen Time.