Can't connect to wifi or receive cellular data
Unfortunately, I dropped my Iphone 12 Pro Max. on the floor. Now it wont connect to Wifi or receive cellular data. Long story short, I need to send off this broken Iphone to Verizon because of a promo I did. The promo was they would take $1000 off towards a new cell if I trade in my phone (broken or not). The problem is I can't factory reset this phone because I guess it needs to connect to the servers to do that. I basically can't do anything with this phone without connecting to the internet. Also, when I try to disable "find my iphone" on the phone itself, it just turns back on and gives me a message "verification failed". I already turned off the Find my iphone on icloud.com. The thing is one of the stips for the promo was that it can't be blocked by anything. I a, just trying to wipe everything off this phone. I even tried Itunes, and it says that I need to disable find myiphone before restoring it which I can't because of the reasons I mentioned above. Is there any other way that I can reset this phone to wipe everything from it ?
Just to add to this: its continuously searching for signal and I know there's physical damage done to whatever component is used to connect to the internet.