It’s possible to remove an Apple ID from your iPhone without a password using UnlockGo.
You can unlock iCloud Activation Lock without a password or the previous owner, remove a forgotten Screen Time passcode without data loss, bypass MDM locks and more. It’s a really powerful app and it’s available for both Mac and PC.
If you get a second-hand iPhone but find out the seller didn’t fully reset it beforehand, UnlockGo will fix it. Here’s how it works.