Super_Saiyan_Wizzy wrote:
I had gotten my iPhone 15 got stolen a few weeks ago, the people who stole it where also able to access my Apple Account. I tried to put the phone in lost mode from Find My but the thieves just tried to remove my iPhone from my Find My. I'm not sure what security feature I toggled but Find My said my phone would only be removed from Find My from the 12 of October. I had been looking for a way to prevent that with no luck.
There is no way for you to prevent it.
Once the thieves got into your Apple Account and requested that your phone be removed from it, that would have immediately cleared Activation Lock. The thieves would then be able to reset and wipe your phone to "make your phone their own" at any time. Even during the "up to 30 days" that the phone remained visible in Find My.
The phone is gone. The best you can do is to contact the police and your carrier, and ask your carrier to blacklist the phone so it will never receive cellular voice, text, or data service again.
The bigger problem is that the thieves got access to your Apple Account. Besides removing Activation Lock, they may have gone through your data in iCloud in hopes of finding stuff useful for identity theft. Secure that account now so that the thieves do not have access to it going forward! And take the other steps that WheelieNick recommended to prevent the thieves from being able to use your phone number for two-factor authentication.