How to remotely erase a stolen iPhone without access to Apple Account?

There is no way for you to remotely erase an iPhone, if all that you know is its phone number.

If you could remotely erase a phone by just entering a phone number, any vandal could do that to anyone's phone.

If your girlfriend's phone was locked with a passcode that the thieves did not know and could not easily guess, and she likewise had an Apple ID password that the thieves did not know and could not easily guess, the passcode lock would have a very high probability of keeping the thieves out of her data. If the thieves stole the phone while it was unlocked (or worse yet, knew or learned her credentials), then it would be a different story.

Smghost wrote:

please my girlfriend iphone xr got stole and the person whi has the phone has access to her phone and we have been trying to log out the icloud but she do not know the password and her gmail password too we have been trying to rest the password but Apple keeps send the rest option to the email on the stolen iPhone. All we want to do is to erase the phone and every data in it even if we won’t get the iCloud back please

[Re-Titled by Moderator]

You have of course reported the phone as stolen to the carrier, with a request to blacklist the phone, right? If no, do so.

If you do not have the Apple ID with which the iPhone is logged in, you cannot erase the device remotely.